1
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Xu Q, Cheung HFH, Cormode DS, Puel TO, Pal S, Yusuf H, Chilcote M, Flatté ME, Johnston‐Halperin E, Fuchs GD. Strong Photon-Magnon Coupling Using a Lithographically Defined Organic Ferrimagnet. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2310032. [PMID: 38279583 PMCID: PMC11005739 DOI: 10.1002/advs.202310032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Indexed: 01/28/2024]
Abstract
A cavity-magnonic system composed of a superconducting microwave resonator coupled to a magnon mode hosted by the organic-based ferrimagnet vanadium tetracyanoethylene (V[TCNE]x) is demonstrated. This work is motivated by the challenge of scalably integrating a low-damping magnetic system with planar superconducting circuits. V[TCNE]x has ultra-low intrinsic damping, can be grown at low processing temperatures on arbitrary substrates, and can be patterned via electron beam lithography. The devices operate in the strong coupling regime, with a cooperativity exceeding 1000 for coupling between the Kittel mode and the resonator mode at T≈0.4 K, suitable for scalable quantum circuit integration. Higher-order magnon modes are also observed with much narrower linewidths than the Kittel mode. This work paves the way for high-cooperativity hybrid quantum devices in which magnonic circuits can be designed and fabricated as easily as electrical wires.
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Affiliation(s)
- Qin Xu
- Department of PhysicsCornell UniversityIthacaNY14853USA
| | | | | | - Tharnier O. Puel
- Department of Physics and AstronomyUniversity of IowaIowa CityIA52242USA
| | - Srishti Pal
- School of Applied and Engineering PhysicsCornell UniversityIthacaNY14853USA
| | - Huma Yusuf
- Department of PhysicsThe Ohio State UniversityColumbusOH43210USA
| | - Michael Chilcote
- School of Applied and Engineering PhysicsCornell UniversityIthacaNY14853USA
| | - Michael E. Flatté
- Department of Physics and AstronomyUniversity of IowaIowa CityIA52242USA
| | | | - Gregory D. Fuchs
- School of Applied and Engineering PhysicsCornell UniversityIthacaNY14853USA
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2
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González-Gutiérrez C, García-Pons D, Zueco D, Martínez-Pérez MJ. Scanning Spin Probe Based on Magnonic Vortex Quantum Cavities. ACS NANO 2024; 18:4717-4725. [PMID: 38271997 PMCID: PMC10867890 DOI: 10.1021/acsnano.3c06704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 01/15/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024]
Abstract
Performing nanoscale scanning electron paramagnetic resonance (EPR) requires three essential ingredients: First, a static magnetic field together with field gradients to Zeeman split the electronic energy levels with spatial resolution; second, a radio frequency (rf) magnetic field capable of inducing spin transitions; finally, a sensitive detection method to quantify the energy absorbed by spins. This is usually achieved by combining externally applied magnetic fields with inductive coils or cavities, fluorescent defects, or scanning probes. Here, we theoretically propose the realization of an EPR scanning sensor merging all three characteristics into a single device: the vortex core stabilized in ferromagnetic thin-film discs. On one hand, the vortex ground state generates a significant static magnetic field and field gradients. On the other hand, the precessional motion of the vortex core around its equilibrium position produces a circularly polarized oscillating magnetic field, which is enough to produce spin transitions. Finally, the spin-magnon coupling broadens the vortex gyrotropic frequency, suggesting a direct measure of the presence of unpaired electrons. Moreover, the vortex core can be displaced by simply using external magnetic fields of a few mT, enabling EPR scanning microscopy with large spatial resolution. Our numerical simulations show that, by using low damping magnets, it is theoretically possible to detect single spins located on the disc's surface. Vortex nanocavities could also attain strong coupling to individual spin molecular qubits with potential applications to mediate qubit-qubit interactions or to implement qubit readout protocols.
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Affiliation(s)
- Carlos
A. González-Gutiérrez
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza ES-50009, Spain
- Department
of Physics and Applied Physics, University
of Massachusetts, Lowell, Massachusetts 01854, United States
- Instituto
de Ciencias Físicas, Universidad
Nacional Autónoma de México, Av. Universidad s/n, Cuernavaca, Morelos 62210, México
| | - David García-Pons
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza ES-50009, Spain
| | - David Zueco
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza ES-50009, Spain
| | - María José Martínez-Pérez
- Instituto
de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza ES-50009, Spain
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3
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Cheng D, Song B, Kang JH, Sundahl C, Edgeton AL, Luo L, Park JM, Collantes YG, Hellstrom EE, Mootz M, Perakis IE, Eom CB, Wang J. Study of Elastic and Structural Properties of BaFe 2As 2 Ultrathin Film Using Picosecond Ultrasonics. MATERIALS (BASEL, SWITZERLAND) 2023; 16:7031. [PMID: 37959629 PMCID: PMC10650054 DOI: 10.3390/ma16217031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 10/30/2023] [Accepted: 10/30/2023] [Indexed: 11/15/2023]
Abstract
We obtain the through-thickness elastic stiffness coefficient (C33) in nominal 9 nm and 60 nm BaFe2As2 (Ba-122) thin films by using picosecond ultrasonics. Particularly, we reveal the increase in elastic stiffness as film thickness decreases from bulk value down to 9 nm, which we attribute to the increase in intrinsic strain near the film-substrate interface. Our density functional theory (DFT) calculations reproduce the observed acoustic oscillation frequencies well. In addition, temperature dependence of longitudinal acoustic (LA) phonon mode frequency for 9 nm Ba-122 thin film is reported. The frequency change is attributed to the change in Ba-122 orthorhombicity (a-b)/(a+b). This conclusion can be corroborated by our previous ultrafast ellipticity measurements in 9 nm Ba-122 thin film, which exhibit strong temperature dependence and indicate the structural phase transition temperature Ts.
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Affiliation(s)
- Di Cheng
- Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA; (D.C.); (B.S.); (L.L.); (J.-M.P.)
- Ames National Laboratory-USDOE, Ames, IA 50011, USA
| | - Boqun Song
- Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA; (D.C.); (B.S.); (L.L.); (J.-M.P.)
- Ames National Laboratory-USDOE, Ames, IA 50011, USA
| | - Jong-Hoon Kang
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (J.-H.K.); (C.S.); (A.L.E.); (C.-B.E.)
| | - Chris Sundahl
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (J.-H.K.); (C.S.); (A.L.E.); (C.-B.E.)
| | - Anthony L. Edgeton
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (J.-H.K.); (C.S.); (A.L.E.); (C.-B.E.)
| | - Liang Luo
- Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA; (D.C.); (B.S.); (L.L.); (J.-M.P.)
- Ames National Laboratory-USDOE, Ames, IA 50011, USA
| | - Joong-Mok Park
- Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA; (D.C.); (B.S.); (L.L.); (J.-M.P.)
- Ames National Laboratory-USDOE, Ames, IA 50011, USA
| | - Yesusa G. Collantes
- Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA (E.E.H.)
| | - Eric E. Hellstrom
- Applied Superconductivity Center, National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA (E.E.H.)
| | - Martin Mootz
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294-1170, USA; (M.M.); (I.E.P.)
| | - Ilias E. Perakis
- Department of Physics, University of Alabama at Birmingham, Birmingham, AL 35294-1170, USA; (M.M.); (I.E.P.)
| | - Chang-Beom Eom
- Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA; (J.-H.K.); (C.S.); (A.L.E.); (C.-B.E.)
| | - Jigang Wang
- Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA; (D.C.); (B.S.); (L.L.); (J.-M.P.)
- Ames National Laboratory-USDOE, Ames, IA 50011, USA
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4
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Guo S, Russell D, Lanier J, Da H, Hammel PC, Yang F. Strong on-Chip Microwave Photon-Magnon Coupling Using Ultralow-Damping Epitaxial Y 3Fe 5O 12 Films at 2 K. NANO LETTERS 2023. [PMID: 37235476 DOI: 10.1021/acs.nanolett.3c00959] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Y3Fe5O12 is arguably the best magnetic material for magnonic quantum information science (QIS) because of its extremely low damping. We report ultralow damping at 2 K in epitaxial Y3Fe5O12 thin films grown on a diamagnetic Y3Sc2Ga3O12 substrate that contains no rare-earth elements. Using these ultralow damping YIG films, we demonstrate for the first time strong coupling between magnons in patterned YIG thin films and microwave photons in a superconducting Nb resonator. This result paves the road toward scalable hybrid quantum systems that integrate superconducting microwave resonators, YIG film magnon conduits, and superconducting qubits into on-chip QIS devices.
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Affiliation(s)
- Side Guo
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, United States of America
| | - Daniel Russell
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, United States of America
| | - Joseph Lanier
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, United States of America
| | - Haotian Da
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, United States of America
| | - P Chris Hammel
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, United States of America
| | - Fengyuan Yang
- Department of Physics, The Ohio State University, Columbus, Ohio 43210, United States of America
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5
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Xie H, He LW, Liao CG, Chen ZH, Lin XM. Generation of robust optical entanglement in cavity optomagnonics. OPTICS EXPRESS 2023; 31:7994-8004. [PMID: 36859918 DOI: 10.1364/oe.478963] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
We propose a scheme to realize robust optical entanglement in cavity optomagnonics, where two optical whispering gallery modes (WGMs) couple to a magnon mode in a yttrium iron garnet (YIG) sphere. The beam-splitter-like and two-mode squeezing magnon-photon interactions can be realized simultaneously when the two optical WGMs are driven by external fields. Entanglement between the two optical modes is then generated via their coupling with magnons. By exploiting the destructive quantum interference between the bright modes of the interface, the effects of initial thermal occupations of magnons can be eliminated. Moreover, the excitation of the Bogoliubov dark mode is capable of protecting the optical entanglement from thermal heating effects. Therefore, the generated optical entanglement is robust against thermal noise and the requirement of cooling the magnon mode is relaxed. Our scheme may find applications in the study of magnon-based quantum information processing.
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6
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Hei XL, Li PB, Pan XF, Nori F. Enhanced Tripartite Interactions in Spin-Magnon-Mechanical Hybrid Systems. PHYSICAL REVIEW LETTERS 2023; 130:073602. [PMID: 36867822 DOI: 10.1103/physrevlett.130.073602] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Coherent tripartite interactions among degrees of freedom of completely different nature are instrumental for quantum information and simulation technologies, but they are generally difficult to realize and remain largely unexplored. Here, we predict a tripartite coupling mechanism in a hybrid setup comprising a single nitrogen-vacancy (NV) center and a micromagnet. We propose to realize direct and strong tripartite interactions among single NV spins, magnons, and phonons via modulating the relative motion between the NV center and the micromagnet. Specifically, by introducing a parametric drive (two-phonon drive) to modulate the mechanical motion (such as the center-of-mass motion of a NV spin in diamond trapped in an electrical trap or a levitated micromagnet in a magnetic trap), we can obtain a tunable and strong spin-magnon-phonon coupling at the single quantum level, with up to 2 orders of magnitude enhancement for the tripartite coupling strength. This enables, for example, tripartite entanglement among solid-state spins, magnons, and mechanical motions in quantum spin-magnonics-mechanics with realistic experimental parameters. This protocol can be readily implemented with the well-developed techniques in ion traps or magnetic traps and could pave the way for general applications in quantum simulations and information processing based on directly and strongly coupled tripartite systems.
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Affiliation(s)
- Xin-Lei Hei
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Peng-Bo Li
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
- Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama 351-0198, Japan
| | - Xue-Feng Pan
- Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an 710049, China
| | - Franco Nori
- Theoretical Quantum Physics Laboratory, RIKEN Cluster for Pioneering Research, Wako-shi, Saitama 351-0198, Japan
- RIKEN Center for Quantum Computing (RQC), 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
- Physics Department, University of Michigan, Ann Arbor, Michigan 48109-1040, USA
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7
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Li Y, Yefremenko VG, Lisovenko M, Trevillian C, Polakovic T, Cecil TW, Barry PS, Pearson J, Divan R, Tyberkevych V, Chang CL, Welp U, Kwok WK, Novosad V. Coherent Coupling of Two Remote Magnonic Resonators Mediated by Superconducting Circuits. PHYSICAL REVIEW LETTERS 2022; 128:047701. [PMID: 35148146 DOI: 10.1103/physrevlett.128.047701] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
We demonstrate microwave-mediated distant magnon-magnon coupling on a superconducting circuit platform, incorporating chip-mounted single-crystal Y_{3}Fe_{5}O_{12} (YIG) spheres. Coherent level repulsion and dissipative level attraction between the magnon modes of the two YIG spheres are demonstrated. The former is mediated by cavity photons of a superconducting resonator, and the latter is mediated by propagating photons of a coplanar waveguide. Our results open new avenues toward exploring integrated hybrid magnonic networks for coherent information processing on a quantum-compatible superconducting platform.
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Affiliation(s)
- Yi Li
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | | | - Marharyta Lisovenko
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Cody Trevillian
- Department of Physics, Oakland University, Rochester, Michigan 48309, USA
| | - Tomas Polakovic
- Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Thomas W Cecil
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Peter S Barry
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - John Pearson
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Ralu Divan
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Vasyl Tyberkevych
- Department of Physics, Oakland University, Rochester, Michigan 48309, USA
| | - Clarence L Chang
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Ulrich Welp
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Wai-Kwong Kwok
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Valentine Novosad
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
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8
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Adhikari K, Choudhury S, Barman S, Otani Y, Barman A. Observation of magnon-magnon coupling with high cooperativity in Ni 80Fe 20cross-shaped nanoring array. NANOTECHNOLOGY 2021; 32:395706. [PMID: 34161940 DOI: 10.1088/1361-6528/ac0ddc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 06/23/2021] [Indexed: 06/13/2023]
Abstract
We report here an experimental observation of dynamic dipolar coupling induced magnon-magnon coupling and spin wave (SW) mode splitting in Ni80Fe20cross-shaped nanoring array. Remarkably, we observe an anticrossing feature with minimum frequency gap of 0.96 GHz and the corresponding high cooperativity value of 2.25. Interestingly, splitting of the highest frequency SW mode occurs due to the anisotropic dipolar interactions between the cross nanorings. Furthermore, using micromagnetic simulations we demonstrate that the coupled SW modes propagate longer as opposed to other modes present in this system. Our work paves the way towards integrated hybrid systems-based quantum magnonics and on-chip coherent information transfer.
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Affiliation(s)
- Kartik Adhikari
- Department of Condensed Matter Physics and Material Sciences, S N Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700106, India
- Department of Physics, New Alipore College, New Alipore, Kolkata 700053, India
| | - Samiran Choudhury
- Department of Condensed Matter Physics and Material Sciences, S N Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700106, India
| | - Saswati Barman
- Institute of Engineering and Management, Sector V, Salt Lake, Kolkata 700091, India
| | - Yoshichika Otani
- CEMS-RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Institute for Solid State Physics, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Anjan Barman
- Department of Condensed Matter Physics and Material Sciences, S N Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700106, India
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9
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Golovchanskiy IA, Abramov NN, Stolyarov VS, Weides M, Ryazanov VV, Golubov AA, Ustinov AV, Kupriyanov MY. Ultrastrong photon-to-magnon coupling in multilayered heterostructures involving superconducting coherence via ferromagnetic layers. SCIENCE ADVANCES 2021; 7:eabe8638. [PMID: 34144980 PMCID: PMC8213224 DOI: 10.1126/sciadv.abe8638] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 05/06/2021] [Indexed: 06/12/2023]
Abstract
The critical step for future quantum industry demands realization of efficient information exchange between different-platform hybrid systems that can harvest advantages of distinct platforms. The major restraining factor for the progress in certain hybrids is weak coupling strength between the elemental particles. In particular, this restriction impedes a promising field of hybrid magnonics. In this work, we propose an approach for realization of on-chip hybrid magnonic systems with unprecedentedly strong coupling parameters. The approach is based on multilayered microstructures containing superconducting, insulating, and ferromagnetic layers with modified photon phase velocities and magnon eigenfrequencies. The enhanced coupling strength is provided by the radically reduced photon mode volume. Study of the microscopic mechanism of the photon-to-magnon coupling evidences formation of the long-range superconducting coherence via thick strong ferromagnetic layers in superconductor/ferromagnet/superconductor trilayer in the presence of magnetization precession. This discovery offers new opportunities in microwave superconducting spintronics for quantum technologies.
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Affiliation(s)
- Igor A Golovchanskiy
- Moscow Institute of Physics and Technology, State University, 9 Institutskiy per., Dolgoprudny, Moscow Region 141700, Russia.
- National University of Science and Technology MISIS, 4 Leninsky prosp., Moscow 119049, Russia
| | - Nikolay N Abramov
- National University of Science and Technology MISIS, 4 Leninsky prosp., Moscow 119049, Russia
| | - Vasily S Stolyarov
- Moscow Institute of Physics and Technology, State University, 9 Institutskiy per., Dolgoprudny, Moscow Region 141700, Russia
- Dukhov Research Institute of Automatics (VNIIA), Sushchevskaya 22, Moscow 127055, Russia
| | - Martin Weides
- James Watt School of Engineering, Electronics and Nanoscale Engineering Division, University of Glasgow, Glasgow G12 8QQ, UK
| | - Valery V Ryazanov
- National University of Science and Technology MISIS, 4 Leninsky prosp., Moscow 119049, Russia
- Institute of Solid State Physics (ISSP RAS), Chernogolovka, Moscow Region 142432, Russia
| | - Alexander A Golubov
- Moscow Institute of Physics and Technology, State University, 9 Institutskiy per., Dolgoprudny, Moscow Region 141700, Russia
- Faculty of Science and Technology and MESA+ Institute for Nanotechnology, University of Twente, 7500 AE Enschede, Netherlands
| | - Alexey V Ustinov
- National University of Science and Technology MISIS, 4 Leninsky prosp., Moscow 119049, Russia
- Physikalisches Institut, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
- Russian Quantum Center, Skolkovo, 143025 Moscow Region, Russia
| | - Mikhail Yu Kupriyanov
- Moscow Institute of Physics and Technology, State University, 9 Institutskiy per., Dolgoprudny, Moscow Region 141700, Russia
- Skobeltsyn Institute of Nuclear Physics, MSU, Moscow 119991, Russia
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10
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Abstract
Scalable quantum information systems would store, manipulate, and transmit quantum information locally and across a quantum network, but no single qubit technology is currently robust enough to perform all necessary tasks. Defect centers in solid-state materials have emerged as potential intermediaries between other physical manifestations of qubits, such as superconducting qubits and photonic qubits, to leverage their complementary advantages. It remains an open question, however, how to design and to control quantum interfaces to defect centers. Such interfaces would enable quantum information to be moved seamlessly between different physical systems. Understanding and constructing the required interfaces would, therefore, unlock the next big steps in quantum computing, sensing, and communications. In this Perspective, we highlight promising coupling mechanisms, including dipole-, phonon-, and magnon-mediated interactions, and discuss how contributions from nanotechnologists will be paramount in realizing quantum information processors in the near-term.
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Affiliation(s)
- Derek S Wang
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Michael Haas
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Prineha Narang
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
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11
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Xu J, Zhong C, Han X, Jin D, Jiang L, Zhang X. Coherent Gate Operations in Hybrid Magnonics. PHYSICAL REVIEW LETTERS 2021; 126:207202. [PMID: 34110202 DOI: 10.1103/physrevlett.126.207202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
Electromagnonics-the hybridization of spin excitations and electromagnetic waves-has been recognized as a promising candidate for coherent information processing in recent years. Among its various implementations, the lack of available approaches for real-time manipulation on the system dynamics has become a common and urgent limitation. In this work, by introducing a fast and uniform modulation technique, we successfully demonstrate a series of benchmark coherent gate operations in hybrid magnonics, including semiclassical analogies of Landau-Zener transitions, Rabi oscillations, Ramsey interference, and controlled mode swap operations. Our approach lays the groundwork for dynamical manipulation of coherent signals in hybrid magnonics and can be generalized to a broad range of applications.
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Affiliation(s)
- Jing Xu
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Changchun Zhong
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Xu Han
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Dafei Jin
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Liang Jiang
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Xufeng Zhang
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
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12
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Shao Q, Li P, Liu L, Yang H, Fukami S, Razavi A, Wu H, Wang K, Freimuth F, Mokrousov Y, Stiles MD, Emori S, Hoffmann A, Åkerman J, Roy K, Wang JP, Yang SH, Garello K, Zhang W. Roadmap of spin-orbit torques. IEEE TRANSACTIONS ON MAGNETICS 2021; 57:10.48550/arXiv.2104.11459. [PMID: 37057056 PMCID: PMC10091395 DOI: 10.48550/arxiv.2104.11459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Spin-orbit torque (SOT) is an emerging technology that enables the efficient manipulation of spintronic devices. The initial processes of interest in SOTs involved electric fields, spin-orbit coupling, conduction electron spins and magnetization. More recently interest has grown to include a variety of other processes that include phonons, magnons, or heat. Over the past decade, many materials have been explored to achieve a larger SOT efficiency. Recently, holistic design to maximize the performance of SOT devices has extended material research from a nonmagnetic layer to a magnetic layer. The rapid development of SOT has spurred a variety of SOT-based applications. In this Roadmap paper, we first review the theories of SOTs by introducing the various mechanisms thought to generate or control SOTs, such as the spin Hall effect, the Rashba-Edelstein effect, the orbital Hall effect, thermal gradients, magnons, and strain effects. Then, we discuss the materials that enable these effects, including metals, metallic alloys, topological insulators, two-dimensional materials, and complex oxides. We also discuss the important roles in SOT devices of different types of magnetic layers, such as magnetic insulators, antiferromagnets, and ferrimagnets. Afterward, we discuss device applications utilizing SOTs. We discuss and compare three-terminal and two-terminal SOT-magnetoresistive random-access memories (MRAMs); we mention various schemes to eliminate the need for an external field. We provide technological application considerations for SOT-MRAM and give perspectives on SOT-based neuromorphic devices and circuits. In addition to SOT-MRAM, we present SOT-based spintronic terahertz generators, nano-oscillators, and domain wall and skyrmion racetrack memories. This paper aims to achieve a comprehensive review of SOT theory, materials, and applications, guiding future SOT development in both the academic and industrial sectors.
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Affiliation(s)
- Qiming Shao
- Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology
| | - Peng Li
- Department of Electrical and Computer Engineering, Auburn University
| | - Luqiao Liu
- Electrical Engineering and Computer Science, Massachusetts Institute of Technology
| | - Hyunsoo Yang
- Department of Electrical and Computer Engineering, National University of Singapore
| | - Shunsuke Fukami
- Research Institute of Electrical Communication, Tohoku University
| | - Armin Razavi
- Department of Electrical and Computer Engineering, University of California, Los Angeles
| | - Hao Wu
- Department of Electrical and Computer Engineering, University of California, Los Angeles
| | - Kang Wang
- Department of Electrical and Computer Engineering, University of California, Los Angeles
| | | | | | - Mark D Stiles
- Alternative Computing Group, National Institute of Standards and Technology
| | | | - Axel Hoffmann
- Department of Materials Science and Engineering, University of Illinois Urbana-Champaign
| | | | - Kaushik Roy
- Department of Electrical and Computer Engineering, Purdue University
| | - Jian-Ping Wang
- Electrical and Computer Engineering Department, University of Minnesota
| | | | - Kevin Garello
- IMEC, Leuven, Belgium; CEA-Spintec, Grenoble, France
| | - Wei Zhang
- Physics Department, Oakland University
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13
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Li Y, Zhao C, Amin VP, Zhang Z, Vogel M, Xiong Y, Sklenar J, Divan R, Pearson J, Stiles MD, Zhang W, Hoffmann A, Novosad V. Phase-resolved electrical detection of hybrid magnonic devices. APPLIED PHYSICS LETTERS 2021; 118:10.1063/5.0042784. [PMID: 36452035 PMCID: PMC9706546 DOI: 10.1063/5.0042784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 05/03/2021] [Indexed: 06/17/2023]
Abstract
We demonstrate the electrical detection of magnon-magnon hybrid dynamics in yttrium iron garnet/permalloy (YIG/Py) thin film bilayer devices. Direct microwave current injection through the conductive Py layer excites the hybrid dynamics consisting of the uniform mode of Py and the first standing spin wave (n = 1) mode of YIG, which are coupled via interfacial exchange. Both the two hybrid modes, with Py or YIG dominated excitations, can be detected via the spin rectification signals from the conductive Py layer, providing phase resolution of the coupled dynamics. The phase characterization is also applied to a nonlocally excited Py device, revealing the additional phase shift due to the perpendicular Oersted field. Our results provide a device platform for exploring hybrid magnonic dynamics and probing their phases, which are crucial for implementing coherent information processing with magnon excitations.
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Affiliation(s)
- Yi Li
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA†
| | - Chenbo Zhao
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA†
| | - Vivek P. Amin
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Zhizhi Zhang
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA†
| | - Michael Vogel
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA†
- Institute of Physics and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT), University of Kassel, Heinrich-Plett-Strasse 40, Kassel 34132, Germany
| | - Yuzan Xiong
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA†
- Department of Physics, Oakland University, Rochester, MI 48309, USA
| | - Joseph Sklenar
- Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48202, USA
| | - Ralu Divan
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, USA
| | - John Pearson
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA†
| | - Mark D. Stiles
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Wei Zhang
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA†
- Department of Physics, Oakland University, Rochester, MI 48309, USA
| | - Axel Hoffmann
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign Urbana, IL 61801, USA
| | - Valentine Novosad
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA†
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14
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Neuman T, Wang DS, Narang P. Nanomagnonic Cavities for Strong Spin-Magnon Coupling and Magnon-Mediated Spin-Spin Interactions. PHYSICAL REVIEW LETTERS 2020; 125:247702. [PMID: 33412028 DOI: 10.1103/physrevlett.125.247702] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 11/09/2020] [Indexed: 06/12/2023]
Abstract
We present a theoretical approach to use ferromagnetic or ferrimagnetic nanoparticles as microwave nanomagnonic cavities to concentrate microwave magnetic fields into deeply subwavelength volumes ∼10^{-13} mm^{3}. We show that the field in such nanocavities can efficiently couple to isolated spin emitters (spin qubits) positioned close to the nanoparticle surface reaching the single magnon-spin strong-coupling regime and mediate efficient long-range quantum state transfers between isolated spin emitters. Nanomagnonic cavities thus pave the way toward magnon-based quantum networks and magnon-mediated quantum gates.
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Affiliation(s)
- Tomáš Neuman
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Derek S Wang
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
| | - Prineha Narang
- Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
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15
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Xu J, Zhong C, Han X, Jin D, Jiang L, Zhang X. Floquet Cavity Electromagnonics. PHYSICAL REVIEW LETTERS 2020; 125:237201. [PMID: 33337181 DOI: 10.1103/physrevlett.125.237201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 09/12/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
Hybrid magnonics has recently attracted intensive attention as a promising platform for coherent information processing. In spite of its rapid development, on-demand control over the interaction of magnons with other information carriers, in particular, microwave photons in electromagnonic systems, has been long missing, significantly limiting the potential broad applications of hybrid magnonics. Here, we show that, by introducing Floquet engineering into cavity electromagnonics, coherent control on the magnon-microwave photon coupling can be realized. Leveraging the periodic temporal modulation from a Floquet drive, our first-of-its-kind Floquet cavity electromagnonic system enables the manipulation of the interaction between hybridized cavity electromagnonic modes. Moreover, we have achieved a new coupling regime in such systems: the Floquet ultrastrong coupling, where the Floquet splitting is comparable with or even larger than the level spacing of the two interacting modes, beyond the conventional rotating-wave picture. Our findings open up new directions for magnon-based coherent signal processing.
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Affiliation(s)
- Jing Xu
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Changchun Zhong
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Xu Han
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Dafei Jin
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Liang Jiang
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, USA
| | - Xufeng Zhang
- Center for Nanoscale Materials, Argonne National Laboratory, Lemont, Illinois 60439, USA
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16
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Xiong Y, Zhang Z, Li Y, Hammami M, Sklenar J, Alahmed L, Li P, Sebastian T, Qu H, Hoffmann A, Novosad V, Zhang W. Experimental parameters, combined dynamics, and nonlinearity of a magnonic-opto-electronic oscillator (MOEO). THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:125105. [PMID: 33379972 DOI: 10.1063/5.0023715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
We report the construction and characterization of a comprehensive magnonic-opto-electronic oscillator (MOEO) system based on 1550-nm photonics and yttrium iron garnet (YIG) magnonics. The system exhibits a rich and synergistic parameter space because of the ability to control individual photonic, electronic, and magnonic components. Taking advantage of the spin wave dispersion of YIG, the frequency self-generation as well as the related nonlinear processes becomes sensitive to the external magnetic field. Besides being known as a band-pass filter and a delay element, the YIG delay line possesses spin wave modes that can be controlled to mix with the optoelectronic modes to generate higher-order harmonic beating modes. With the high sensitivity and external tunability, the MOEO system may find usefulness in sensing applications in magnetism and spintronics beyond optoelectronics and photonics.
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Affiliation(s)
- Yuzan Xiong
- Department of Physics, Oakland University, Rochester, Michigan 48309, USA
| | - Zhizhi Zhang
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Yi Li
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Mouhamad Hammami
- Department of Physics, Oakland University, Rochester, Michigan 48309, USA
| | - Joseph Sklenar
- Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201, USA
| | - Laith Alahmed
- Department of Electrical and Computer Engineering, Auburn University, Auburn, Alabama 36849, USA
| | - Peng Li
- Department of Electrical and Computer Engineering, Auburn University, Auburn, Alabama 36849, USA
| | - Thomas Sebastian
- THATec Innovation GmbH, Augustaanlage 23, 68165 Mannheim, Germany
| | - Hongwei Qu
- Department of Electronic and Computer Engineering, Oakland University, Rochester, Michigan 48309, USA
| | - Axel Hoffmann
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Valentine Novosad
- Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Wei Zhang
- Department of Physics, Oakland University, Rochester, Michigan 48309, USA
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17
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Hirosawa T, Díaz SA, Klinovaja J, Loss D. Magnonic Quadrupole Topological Insulator in Antiskyrmion Crystals. PHYSICAL REVIEW LETTERS 2020; 125:207204. [PMID: 33258632 DOI: 10.1103/physrevlett.125.207204] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 09/20/2020] [Accepted: 10/15/2020] [Indexed: 06/12/2023]
Abstract
We uncover that antiskyrmion crystals provide an experimentally accessible platform to realize a magnonic quadrupole topological insulator, whose hallmark signatures are robust magnonic corner states. Furthermore, we show that tuning an applied magnetic field can trigger the self-assembly of antiskyrmions carrying a fractional topological charge along the sample edges. Crucially, these fractional antiskyrmions restore the symmetries needed to enforce the emergence of the magnonic corner states. Using the machinery of nested Wilson loops, adapted to magnonic systems supported by noncollinear magnetic textures, we demonstrate the quantization of the bulk quadrupole moment, edge dipole moments, and corner charges.
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Affiliation(s)
- Tomoki Hirosawa
- Department of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033, Japan
| | - Sebastián A Díaz
- Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
| | - Jelena Klinovaja
- Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
| | - Daniel Loss
- Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
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18
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Liu ZX, Xiong H. Magnon laser based on Brillouin light scattering. OPTICS LETTERS 2020; 45:5452-5455. [PMID: 33001917 DOI: 10.1364/ol.401689] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/14/2020] [Indexed: 06/11/2023]
Abstract
An analogous laser action of magnons has become a subject of interest, and it is crucial for the study of nonlinear magnons spintronics. In this Letter, we demonstrate the magnon laser behavior based on Brillouin light scattering in a ferrimagnetic insulator sphere, which supports optical whispering gallery modes and magnon resonances. We show that the excited magnon plays what has traditionally been the role of the Stokes wave and is coherently amplified during the Brillouin scattering process, making the magnon laser possible. Furthermore, the stimulating excited magnon number increasing exponentially with the input light power can be manipulated by adjusting the external magnetic field. In addition to providing insight into magneto-optical interaction, the study of the magnon laser action will help to develop novel, to the best of our knowledge, technologies for handling spin-wave excitations, and it could affect scientific fields beyond magnonics. Potential applications range from preparing coherent magnon sources to operating on-chip functional magnetic devices.
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19
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Kobecki M, Scherbakov AV, Linnik TL, Kukhtaruk SM, Gusev VE, Pattnaik DP, Akimov IA, Rushforth AW, Akimov AV, Bayer M. Resonant thermal energy transfer to magnons in a ferromagnetic nanolayer. Nat Commun 2020; 11:4130. [PMID: 32807771 PMCID: PMC7431562 DOI: 10.1038/s41467-020-17635-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 07/02/2020] [Indexed: 11/29/2022] Open
Abstract
Energy harvesting is a concept which makes dissipated heat useful by transferring thermal energy to other excitations. Most of the existing principles are realized in systems which are heated continuously. We present the concept of high-frequency energy harvesting where the dissipated heat in a sample excites resonant magnons in a thin ferromagnetic metal layer. The sample is excited by femtosecond laser pulses with a repetition rate of 10 GHz, which results in temperature modulation at the same frequency with amplitude ~0.1 K. The alternating temperature excites magnons in the ferromagnetic nanolayer which are detected by measuring the net magnetization precession. When the magnon frequency is brought onto resonance with the optical excitation, a 12-fold increase of the amplitude of precession indicates efficient resonant heat transfer from the lattice to coherent magnons. The demonstrated principle may be used for energy harvesting in various nanodevices operating at GHz and sub-THz frequency ranges.
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Affiliation(s)
- Michal Kobecki
- Experimentelle Physik 2, Technische Universität Dortmund, Otto-Hahn-Strasse 4a, 44227, Dortmund, Germany.
| | - Alexey V Scherbakov
- Experimentelle Physik 2, Technische Universität Dortmund, Otto-Hahn-Strasse 4a, 44227, Dortmund, Germany.
- Ioffe Institute, Politechnycheskaya 26, St. Petersburg, Russian Federation, 194021.
| | - Tetiana L Linnik
- Department of Theoretical Physics, V.E. Lashkaryov Institute of Semiconductor Physics, Pr. Nauky 41, Kyiv, 03028, Ukraine
| | - Serhii M Kukhtaruk
- Experimentelle Physik 2, Technische Universität Dortmund, Otto-Hahn-Strasse 4a, 44227, Dortmund, Germany
- Department of Theoretical Physics, V.E. Lashkaryov Institute of Semiconductor Physics, Pr. Nauky 41, Kyiv, 03028, Ukraine
| | - Vitalyi E Gusev
- LAUM, CNRS UMR 6613, Le Mans Université, 72085, Le Mans, France
| | - Debi P Pattnaik
- School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Ilya A Akimov
- Experimentelle Physik 2, Technische Universität Dortmund, Otto-Hahn-Strasse 4a, 44227, Dortmund, Germany
- Ioffe Institute, Politechnycheskaya 26, St. Petersburg, Russian Federation, 194021
| | - Andrew W Rushforth
- School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Andrey V Akimov
- School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Manfred Bayer
- Experimentelle Physik 2, Technische Universität Dortmund, Otto-Hahn-Strasse 4a, 44227, Dortmund, Germany
- Ioffe Institute, Politechnycheskaya 26, St. Petersburg, Russian Federation, 194021
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20
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Xiong Y, Li Y, Hammami M, Bidthanapally R, Sklenar J, Zhang X, Qu H, Srinivasan G, Pearson J, Hoffmann A, Novosad V, Zhang W. Probing magnon-magnon coupling in exchange coupled Y[Formula: see text]Fe[Formula: see text]O[Formula: see text]/Permalloy bilayers with magneto-optical effects. Sci Rep 2020; 10:12548. [PMID: 32724049 PMCID: PMC7387351 DOI: 10.1038/s41598-020-69364-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 07/10/2020] [Indexed: 11/09/2022] Open
Abstract
We demonstrate the magnetically-induced transparency (MIT) effect in Y[Formula: see text]Fe[Formula: see text]O[Formula: see text](YIG)/Permalloy (Py) coupled bilayers. The measurement is achieved via a heterodyne detection of the coupled magnetization dynamics using a single wavelength that probes the magneto-optical Kerr and Faraday effects of Py and YIG, respectively. Clear features of the MIT effect are evident from the deeply modulated ferromagnetic resonance of Py due to the perpendicular-standing-spin-wave of YIG. We develop a phenomenological model that nicely reproduces the experimental results including the induced amplitude and phase evolution caused by the magnon-magnon coupling. Our work offers a new route towards studying phase-resolved spin dynamics and hybrid magnonic systems.
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Affiliation(s)
- Yuzan Xiong
- Department of Physics, Oakland University, Rochester, MI 48309 USA
- Department of Electronic and Computer Engineering, Oakland University, Rochester, MI 48309 USA
| | - Yi Li
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439 USA
| | - Mouhamad Hammami
- Department of Physics, Oakland University, Rochester, MI 48309 USA
| | | | - Joseph Sklenar
- Department of Physics and Astronomy, Wayne State University, Detroit, MI 48201 USA
| | - Xufeng Zhang
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439 USA
| | - Hongwei Qu
- Department of Electronic and Computer Engineering, Oakland University, Rochester, MI 48309 USA
| | | | - John Pearson
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439 USA
| | - Axel Hoffmann
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439 USA
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 USA
| | - Valentine Novosad
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439 USA
| | - Wei Zhang
- Department of Physics, Oakland University, Rochester, MI 48309 USA
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439 USA
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21
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Shim J, Kim SJ, Kim SK, Lee KJ. Enhanced Magnon-Photon Coupling at the Angular Momentum Compensation Point of Ferrimagnets. PHYSICAL REVIEW LETTERS 2020; 125:027205. [PMID: 32701310 DOI: 10.1103/physrevlett.125.027205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
We theoretically show that the coupling between magnons in an antiferromagnetically coupled ferrimagnet and microwave photons in a cavity is largely enhanced at the angular momentum compensation point (T_{A}) when T_{A} is distinct from the magnetization compensation point. The origin of the enhanced magnon-photon coupling at T_{A} is identified as the antiferromagnetic spin dynamics combined with a finite magnetization. Moreover, we show that strong magnon-photon coupling can be achieved at high excitation frequency in a ferrimagnet, which is challenging to achieve for a ferromagnet due to low magnon frequency and for an antiferromagnet due to weak magnon-photon coupling. Our results will invigorate research on magnon-photon coupling by proposing ferrimagnets as a versatile platform that offers advantages of both ferromagnets and antiferromagnets.
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Affiliation(s)
- Jaechul Shim
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
- Semiconductor R&D Center, Samsung Electronics Co. Ltd., Hwaseong, Gyeonggi 18448, Korea
| | - Seok-Jong Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
| | - Se Kwon Kim
- Department of Physics, KAIST, Daejeon 34141, Korea
- Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA
| | - Kyung-Jin Lee
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
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22
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Khodadadi B, Rai A, Sapkota A, Srivastava A, Nepal B, Lim Y, Smith DA, Mewes C, Budhathoki S, Hauser AJ, Gao M, Li JF, Viehland DD, Jiang Z, Heremans JJ, Balachandran PV, Mewes T, Emori S. Conductivitylike Gilbert Damping due to Intraband Scattering in Epitaxial Iron. PHYSICAL REVIEW LETTERS 2020; 124:157201. [PMID: 32357022 DOI: 10.1103/physrevlett.124.157201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 12/02/2019] [Accepted: 03/18/2020] [Indexed: 06/11/2023]
Abstract
Confirming the origin of Gilbert damping by experiment has remained a challenge for many decades, even for simple ferromagnetic metals. Here, we experimentally identify Gilbert damping that increases with decreasing electronic scattering in epitaxial thin films of pure Fe. This observation of conductivitylike damping, which cannot be accounted for by classical eddy-current loss, is in excellent quantitative agreement with theoretical predictions of Gilbert damping due to intraband scattering. Our results resolve the long-standing question about a fundamental damping mechanism and offer hints for engineering low-loss magnetic metals for cryogenic spintronics and quantum devices.
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Affiliation(s)
- Behrouz Khodadadi
- Department of Physics, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Anish Rai
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
- Center for Materials for Information Technology (MINT), University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Arjun Sapkota
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
- Center for Materials for Information Technology (MINT), University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Abhishek Srivastava
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
- Center for Materials for Information Technology (MINT), University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Bhuwan Nepal
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
- Center for Materials for Information Technology (MINT), University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Youngmin Lim
- Department of Physics, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - David A Smith
- Department of Physics, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Claudia Mewes
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
- Center for Materials for Information Technology (MINT), University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Sujan Budhathoki
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
- Center for Materials for Information Technology (MINT), University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Adam J Hauser
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
- Center for Materials for Information Technology (MINT), University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Min Gao
- Department of Material Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Jie-Fang Li
- Department of Material Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Dwight D Viehland
- Department of Material Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Zijian Jiang
- Department of Physics, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Jean J Heremans
- Department of Physics, Virginia Tech, Blacksburg, Virginia 24061, USA
| | - Prasanna V Balachandran
- Department of Material Science and Engineering, University of Virginia, Charlottesville, Virginia 22904, USA
- Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 22904, USA
| | - Tim Mewes
- Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487, USA
- Center for Materials for Information Technology (MINT), University of Alabama, Tuscaloosa, Alabama 35487, USA
| | - Satoru Emori
- Department of Physics, Virginia Tech, Blacksburg, Virginia 24061, USA
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23
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Li Y, Cao W, Amin VP, Zhang Z, Gibbons J, Sklenar J, Pearson J, Haney PM, Stiles MD, Bailey WE, Novosad V, Hoffmann A, Zhang W. Coherent Spin Pumping in a Strongly Coupled Magnon-Magnon Hybrid System. PHYSICAL REVIEW LETTERS 2020; 124:117202. [PMID: 32242705 PMCID: PMC7489308 DOI: 10.1103/physrevlett.124.117202] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 01/23/2020] [Indexed: 05/25/2023]
Abstract
We experimentally identify coherent spin pumping in the magnon-magnon hybrid modes of yttrium iron garnet/permalloy (YIG/Py) bilayers. By reducing the YIG and Py thicknesses, the strong interfacial exchange coupling leads to large avoided crossings between the uniform mode of Py and the spin wave modes of YIG enabling accurate determination of modification of the linewidths due to the dampinglike torque. We identify additional linewidth suppression and enhancement for the in-phase and out-of-phase hybrid modes, respectively, which can be interpreted as concerted dampinglike torque from spin pumping. Furthermore, varying the Py thickness shows that both the fieldlike and dampinglike couplings vary like 1/sqrt[t_{Py}], verifying the prediction by the coupled Landau-Lifshitz equations.
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Affiliation(s)
- Yi Li
- Department of Physics, Oakland University, Rochester, MI 48309, USA
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Wei Cao
- Materials Science and Engineering, Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
| | - Vivek P. Amin
- Maryland Nanocenter, University of Maryland, College Park, MD 20742, USA
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Zhizhi Zhang
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
- School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jonathan Gibbons
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Joseph Sklenar
- Department of Physics and Astronomy, Wayne State University, Detroit, MI 48202, USA
| | - John Pearson
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Paul M. Haney
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Mark D. Stiles
- Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - William E. Bailey
- Materials Science and Engineering, Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, USA
| | - Valentine Novosad
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Axel Hoffmann
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
| | - Wei Zhang
- Department of Physics, Oakland University, Rochester, MI 48309, USA
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA
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Lachance-Quirion D, Wolski SP, Tabuchi Y, Kono S, Usami K, Nakamura Y. Entanglement-based single-shot detection of a single magnon with a superconducting qubit. Science 2020; 367:425-428. [DOI: 10.1126/science.aaz9236] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 12/19/2019] [Indexed: 01/25/2023]
Affiliation(s)
- Dany Lachance-Quirion
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro, Tokyo 153-8904, Japan
| | - Samuel Piotr Wolski
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro, Tokyo 153-8904, Japan
| | - Yutaka Tabuchi
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro, Tokyo 153-8904, Japan
| | - Shingo Kono
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro, Tokyo 153-8904, Japan
| | - Koji Usami
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro, Tokyo 153-8904, Japan
| | - Yasunobu Nakamura
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro, Tokyo 153-8904, Japan
- Center for Emergent Matter Science (CEMS), RIKEN, Wako, Saitama 351-0198, Japan
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Hou JT, Liu L. Strong Coupling between Microwave Photons and Nanomagnet Magnons. PHYSICAL REVIEW LETTERS 2019; 123:107702. [PMID: 31573285 DOI: 10.1103/physrevlett.123.107702] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Indexed: 06/10/2023]
Abstract
Coupled microwave photon-magnon hybrid systems offer promising applications by harnessing various magnon physics. At present, in order to realize high coupling strength between the two subsystems, bulky ferromagnets with large spin numbers are utilized, which limits their potential applications for scalable quantum information processing. By enhancing single spin coupling strength using lithographically defined superconducting resonators, we report high cooperativities between a resonator mode and a Kittel mode in nanometer thick Permalloy wires. The on-chip, lithographically scalable, and superconducting quantum circuit compatible design provides a direct route towards realizing hybrid quantum systems with nanomagnets, whose coupling strength can be precisely engineered and dynamic properties can be controlled by various mechanisms derived from spintronic studies.
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Affiliation(s)
- Justin T Hou
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Luqiao Liu
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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