1
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Weinberger TI, Wu Z, Graf DE, Skourski Y, Cabala A, Pospíšil J, Prokleška J, Haidamak T, Bastien G, Sechovský V, Lonzarich GG, Vališka M, Grosche FM, Eaton AG. Quantum Interference between Quasi-2D Fermi Surface Sheets in UTe_{2}. PHYSICAL REVIEW LETTERS 2024; 132:266503. [PMID: 38996318 DOI: 10.1103/physrevlett.132.266503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 02/15/2024] [Accepted: 05/22/2024] [Indexed: 07/14/2024]
Abstract
UTe_{2} is a spin-triplet superconductor candidate for which high quality samples with long mean free paths have recently become available, enabling quantum oscillation measurements to probe its Fermi surface and effective carrier masses. It has recently been reported that UTe_{2} possesses a 3D Fermi surface component [Phys. Rev. Lett. 131, 036501 (2023)PRLTAO0031-900710.1103/PhysRevLett.131.036501]. The distinction between 2D and 3D Fermi surface sections in triplet superconductors can have important implications regarding the topological properties of the superconductivity. Here we report the observation of oscillatory components in the magnetoconductance of UTe_{2} at high magnetic fields. We find that these oscillations are well described by quantum interference between quasiparticles traversing semiclassical trajectories spanning magnetic breakdown networks. Our observations are consistent with a quasi-2D model of this material's Fermi surface based on prior dHvA-effect measurements. Our results strongly indicate that UTe_{2}-which exhibits a multitude of complex physical phenomena-possesses a remarkably simple Fermi surface consisting exclusively of two quasi-2D cylindrical sections.
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Affiliation(s)
| | | | | | | | - A Cabala
- Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, Prague 2, 121 16 Czech Republic
| | - J Pospíšil
- Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, Prague 2, 121 16 Czech Republic
| | - J Prokleška
- Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, Prague 2, 121 16 Czech Republic
| | - T Haidamak
- Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, Prague 2, 121 16 Czech Republic
| | - G Bastien
- Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, Prague 2, 121 16 Czech Republic
| | - V Sechovský
- Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, Prague 2, 121 16 Czech Republic
| | | | - M Vališka
- Charles University, Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Ke Karlovu 5, Prague 2, 121 16 Czech Republic
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2
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Schönemann R, Rosa PFS, Thomas SM, Lai Y, Nguyen DN, Singleton J, Brosha EL, McDonald RD, Zapf V, Maiorov B, Jaime M. Sudden adiabaticity signals reentrant bulk superconductivity in UTe 2. PNAS NEXUS 2024; 3:pgad428. [PMID: 38234583 PMCID: PMC10791595 DOI: 10.1093/pnasnexus/pgad428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 11/27/2023] [Indexed: 01/19/2024]
Abstract
There has been a recent surge of interest in UTe2 due to its unconventional magnetic field (H)-reinforced spin-triplet superconducting phases persisting at fields far above the simple Pauli limit for H ∥ [ 010 ] . Magnetic fields in excess of 35 T then induce a field-polarized magnetic state via a first-order-like phase transition. More controversially, for field orientations close to H ∥ [ 011 ] and above 40 T, electrical resistivity measurements suggest that a further superconducting state may exist. However, no Meissner effect or thermodynamic evidence exists to date for this phase making it difficult to exclude alternative scenarios. In this paper, we describe a study using thermal, electrical, and magnetic probes in magnetic fields of up to 55 T applied between the [010] (b) and [001] (c) directions. Our MHz conductivity data reveal the field-induced state of low or vanishing electrical resistance; our simultaneous magnetocaloric effect measurements (i.e. changes in sample temperature due to changing magnetic field) show the first definitive evidence for adiabaticity and thermal behavior characteristic of bulk field-induced superconductivity.
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Affiliation(s)
- Rico Schönemann
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | | | - Sean M Thomas
- MPA-Q, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - You Lai
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Doan N Nguyen
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - John Singleton
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Eric L Brosha
- MPA-11, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Ross D McDonald
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Vivien Zapf
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Boris Maiorov
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Marcelo Jaime
- MPA-MAGLAB, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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3
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Nihongi K, Kida T, Narumi Y, Kurita N, Tanaka H, Uwatoko Y, Kindo K, Hagiwara M. Piston-cylinder cell made of Ni-Cr-Al alloy for magnetic susceptibility measurements under high pressures in pulsed high magnetic fields. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2023; 94:113903. [PMID: 37938066 DOI: 10.1063/5.0166605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/21/2023] [Indexed: 11/09/2023]
Abstract
We developed a metallic pressure cell made of 56Ni-40Cr-4Al (Ni-Cr-Al) alloy for use with a non-destructive pulse magnet and a magnetic susceptibility measurement apparatus with a proximity detector oscillator (PDO) in pulsed magnetic fields of up to 51 T under pressures of up to 2.1 GPa. Both the sample and sensor coil of the PDO were placed in the cell so that the magnetic signal from Ni-Cr-Al would not overlay the intrinsic magnetic susceptibility of the sample. A systematic investigation of the Joule heating originating from metallic parts of the pressure cell revealed that the increase in sample temperature is negligible at 1.4 K in magnetic fields of up to 40 T in the field-ascending process for the maximum applied magnetic field of 51 T. The effectiveness of our apparatus was demonstrated by investigating the pressure dependence of the magnetization process of the triangular-lattice antiferromagnet Ba3CoSb2O9.
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Affiliation(s)
- Katsuki Nihongi
- Center for Advanced High Magnetic Field Science (AHMF), Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Takanori Kida
- Center for Advanced High Magnetic Field Science (AHMF), Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Yasuo Narumi
- Center for Advanced High Magnetic Field Science (AHMF), Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Nobuyuki Kurita
- Department of Physics, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
| | - Hidekazu Tanaka
- Innovator and Inventor Development Platform (IIDP), Tokyo Institute of Technology, Nagatsuda, Midori-ku, Yokohama 226-8502, Japan
| | - Yoshiya Uwatoko
- The Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Koichi Kindo
- The Institute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Masayuki Hagiwara
- Center for Advanced High Magnetic Field Science (AHMF), Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
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4
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Zheng L, Wu Z, Yang Y, Nie L, Shan M, Sun K, Song D, Yu F, Li J, Zhao D, Li S, Kang B, Zhou Y, Liu K, Xiang Z, Ying J, Wang Z, Wu T, Chen X. Emergent charge order in pressurized kagome superconductor CsV 3Sb 5. Nature 2022; 611:682-687. [PMID: 36418450 DOI: 10.1038/s41586-022-05351-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 09/15/2022] [Indexed: 11/24/2022]
Abstract
The discovery of several electronic orders in kagome superconductors AV3Sb5 (A means K, Rb, Cs) provides a promising platform for exploring unprecedented emergent physics1-9. Under moderate pressure (<2.2 GPa), the triple-Q charge density wave (CDW) order is monotonically suppressed by pressure, while the superconductivity shows a two-dome-like behaviour, suggesting an unusual interplay between superconductivity and CDW order10,11. Given that time-reversal symmetry breaking and electronic nematicity have been revealed inside the triple-Q CDW phase8,9,12,13, understanding this CDW order and its interplay with superconductivity becomes one of the core questions in AV3Sb5 (refs. 3,5,6). Here, we report the evolution of CDW and superconductivity with pressure in CsV3Sb5 by 51V nuclear magnetic resonance measurements. An emergent CDW phase, ascribed to a possible stripe-like CDW order with a unidirectional 4a0 modulation, is observed between Pc1 ≅ 0.58 GPa and Pc2 ≅ 2.0 GPa, which explains the two-dome-like superconducting behaviour under pressure. Furthermore, the nuclear spin-lattice relaxation measurement reveals evidence for pressure-independent charge fluctuations above the CDW transition temperature and unconventional superconducting pairing above Pc2. Our results not only shed new light on the interplay of superconductivity and CDW, but also reveal new electronic correlation effects in kagome superconductors AV3Sb5.
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Affiliation(s)
- Lixuan Zheng
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Zhimian Wu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Ye Yang
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Linpeng Nie
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Min Shan
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Kuanglv Sun
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Dianwu Song
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Fanghang Yu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Jian Li
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Dan Zhao
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Shunjiao Li
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Baolei Kang
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Yanbing Zhou
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Kai Liu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Ziji Xiang
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China.,CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, China
| | - Jianjun Ying
- CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, China
| | - Zhenyu Wang
- CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, China.,CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai, China
| | - Tao Wu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China. .,CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, China. .,CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai, China. .,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China. .,Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
| | - Xianhui Chen
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China. .,CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, Department of Physics, University of Science and Technology of China, Hefei, China. .,CAS Center for Excellence in Superconducting Electronics (CENSE), Shanghai, China. .,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, China. .,Hefei National Laboratory, University of Science and Technology of China, Hefei, China.
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5
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Gonçalves RSBP, Haueisen J, Marques JLB. Inductive temperature measurement: A new sensor improvement for industrial applications. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:046101. [PMID: 32357684 DOI: 10.1063/1.5078581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 03/13/2020] [Indexed: 06/11/2023]
Abstract
A remote temperature sensing technique was developed by measuring exponential decay current pulses in a Helmholtz coil. After an initial calibration to extract a mathematical function relating the time constant (τ) to the temperature of the object sensed, the temperature of other similar objects can be estimated with less power, less strict positioning of the object, and more sensitivity than previous techniques, even inside a water-based fluid.
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Affiliation(s)
| | - Jens Haueisen
- Institut für Biomedizinische Technik und Informatik, Technische Universität Ilmenau, Max-Planck-Ring 14, 98693 Ilmenau, Germany
| | - Jefferson Luiz Brum Marques
- Instituto de Engenharia Biomédica, Departamento de Engenharia Elétrica e Eletrônica, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, Brazil
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6
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Jang BH, Kwon S, Kang JH. Measurement of the magnetic susceptibility of subtle paramagnetic solutions using the diamagnetic repulsion of polymer microparticles. LAB ON A CHIP 2019; 19:2356-2361. [PMID: 31173624 DOI: 10.1039/c9lc00245f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herein, we described a microfluidic device that enabled the measurement of magnetic susceptibility of a subtle paramagnetic solution that could not be determined by conventional magnetic susceptibility measurement methods such as a superconducting quantum interference device (SQUID). We measured the diamagnetic repelling velocity of polystyrene microparticles suspended in a weak paramagnetic solution including 50-150 mM of gadolinium-diethylenetriamine penta-acetic acid (GD-DTPA) and superparamagnetic iron oxide nanoparticles (SPION) (10 nm in diameter) dispersed in distilled water at various concentrations. The measured diamagnetic repelling velocities correlated with our prediction and also with the magnetic susceptibility of the SPION solution measured by a SQUID magnetometer. Via this approach, we could determine the magnetic susceptibility of the subtle paramagnetic solution of GD-DTPA that could not be measured via the conventional method. This study provides us with the new capability of analyzing weakly paramagnetic solutions such as paramagnetic components or metal contaminants present in environmental liquid samples at low concentrations.
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Affiliation(s)
- Bong Hwan Jang
- Department of Biomedical Engineering, School of Life Sciences, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea.
| | - Seyong Kwon
- Department of Biomedical Engineering, School of Life Sciences, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea.
| | - Joo H Kang
- Department of Biomedical Engineering, School of Life Sciences, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Eonyang-eup, Ulju-gun, Ulsan 44919, Republic of Korea.
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7
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Postulka L, Eibisch P, Holzmann A, Wolf B, Lang M. Phase-sensitive dynamic susceptibility setup for measurements in pulsed magnetic fields. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:033901. [PMID: 30927818 DOI: 10.1063/1.5046475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 02/09/2019] [Indexed: 06/09/2023]
Abstract
Dynamic susceptibility, commonly referred to as AC susceptibility, χAC, is a powerful tool to characterize a material's magnetic properties in the presence of a magnetic field B, such as magnetic ordering or spin-relaxation phenomena. The standard technique for accessing χAC is based on measurements of the voltage which is induced in a coil by changes of a sample's magnetization in response to a small oscillating magnetic field. Importantly, this setup allows for a phase-sensitive detection of the susceptibility, thereby providing information on the magnetization dynamics. This method is frequently used in the low-field range, up to several Tesla, where DC fields are readily available. However, there is a growing demand for such magnetic measurements at higher fields, conveniently accessible by the use of pulse-field technology. Whereas various techniques are available for measuring the in-phase part of the susceptibility χAC ', none of them allows for the determination of the out-of-phase part χAC ″. Here we present a realization of an AC susceptometer for measurements of both the in- and out-of-phase component at frequencies up to 47 kHz and an oscillating amplitude of 1.5 mT in a pulsed magnetic field. With this setup, a magnetic signal of 3.6 × 10-6 emu can be resolved. As the setup also enables susceptibility measurements to be performed before and after the field pulse, it can be used to detect temperature changes in response to changes of the magnetic field. This will be demonstrated by measurements on the low-dimensional spin-1/2 system CuSO4·5H2O.
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Affiliation(s)
- Lars Postulka
- Physics Institute, Goethe-University Frankfurt(M), SFB/TR49, D-60438 Frankfurt(M), Germany
| | - Paul Eibisch
- Physics Institute, Goethe-University Frankfurt(M), SFB/TR49, D-60438 Frankfurt(M), Germany
| | - Andreas Holzmann
- Physics Institute, Goethe-University Frankfurt(M), SFB/TR49, D-60438 Frankfurt(M), Germany
| | - Bernd Wolf
- Physics Institute, Goethe-University Frankfurt(M), SFB/TR49, D-60438 Frankfurt(M), Germany
| | - Michael Lang
- Physics Institute, Goethe-University Frankfurt(M), SFB/TR49, D-60438 Frankfurt(M), Germany
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8
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Ran S, Liu IL, Eo YS, Campbell DJ, Neves PM, Fuhrman WT, Saha SR, Eckberg C, Kim H, Graf D, Balakirev F, Singleton J, Paglione J, Butch NP. Extreme magnetic field-boosted superconductivity. NATURE PHYSICS 2019; 15:10.1038/s41567-019-0670-x. [PMID: 34131432 PMCID: PMC8201648 DOI: 10.1038/s41567-019-0670-x] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 08/21/2019] [Indexed: 05/31/2023]
Abstract
Applied magnetic fields underlie exotic quantum states, such as the fractional quantum Hall effect1 and Bose-Einstein condensation of spin excitations2. Superconductivity, however, is inherently antagonistic towards magnetic fields. Only in rare cases3-5 can these effects be mitigated over limited fields, leading to re-entrant superconductivity. Here, we report the coexistence of multiple high-field re-entrant superconducting phases in the spin-triplet superconductor UTe2 (ref. 6). We observe superconductivity in the highest magnetic field range identified for any re-entrant superconductor, beyond 65 T. Although the stability of superconductivity in these high magnetic fields challenges current theoretical models, these extreme properties seem to reflect a new kind of exotic superconductivity rooted in magnetic fluctuations7 and boosted by a quantum dimensional crossover8.
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Affiliation(s)
- Sheng Ran
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA
| | - I-Lin Liu
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA
| | - Yun Suk Eo
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
| | - Daniel J. Campbell
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
| | - Paul M. Neves
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
| | - Wesley T. Fuhrman
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
| | - Shanta R. Saha
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Christopher Eckberg
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
| | - Hyunsoo Kim
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
| | - David Graf
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL, USA
| | - Fedor Balakirev
- National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM, USA
| | - John Singleton
- National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM, USA
- Department of Physics, The Clarendon Laboratory, University of Oxford, Oxford, UK
| | - Johnpierre Paglione
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Nicholas P. Butch
- Center for Nanophysics and Advanced Materials, Department of Physics, University of Maryland, College Park, MD, USA
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, USA
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9
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Xiang Z, Kasahara Y, Asaba T, Lawson B, Tinsman C, Chen L, Sugimoto K, Kawaguchi S, Sato Y, Li G, Yao S, Chen YL, Iga F, Singleton J, Matsuda Y, Li L. Quantum oscillations of electrical resistivity in an insulator. Science 2018; 362:65-69. [PMID: 30166438 DOI: 10.1126/science.aap9607] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 08/20/2018] [Indexed: 11/02/2022]
Abstract
In metals, orbital motions of conduction electrons on the Fermi surface are quantized in magnetic fields, which is manifested by quantum oscillations in electrical resistivity. This Landau quantization is generally absent in insulators. Here, we report a notable exception in an insulator-ytterbium dodecaboride (YbB12). The resistivity of YbB12, which is of a much larger magnitude than the resistivity in metals, exhibits distinct quantum oscillations. These unconventional oscillations arise from the insulating bulk, even though the temperature dependence of the oscillation amplitude follows the conventional Fermi liquid theory of metals with a large effective mass. Quantum oscillations in the magnetic torque are also observed, albeit with a lighter effective mass.
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Affiliation(s)
- Z Xiang
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Y Kasahara
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - T Asaba
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - B Lawson
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA.,Faculty of Applied Science, Université Chrétienne Bilingue du Congo, Beni, North-Kivu, Democratic Republic of Congo
| | - C Tinsman
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Lu Chen
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - K Sugimoto
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - S Kawaguchi
- Japan Synchrotron Radiation Research Institute, Sayo, Hyogo 679-5198, Japan
| | - Y Sato
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - G Li
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA
| | - S Yao
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Y L Chen
- Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, UK
| | - F Iga
- College of Science, Ibaraki University, Mito 310-8512, Japan
| | - John Singleton
- National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Y Matsuda
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan.
| | - Lu Li
- Department of Physics, University of Michigan, Ann Arbor, MI 48109, USA.
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10
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Wehinger B, Fiolka C, Lanza A, Scatena R, Kubus M, Grockowiak A, Coniglio WA, Graf D, Skoulatos M, Chen JH, Gukelberger J, Casati N, Zaharko O, Macchi P, Krämer KW, Tozer S, Mudry C, Normand B, Rüegg C. Giant Pressure Dependence and Dimensionality Switching in a Metal-Organic Quantum Antiferromagnet. PHYSICAL REVIEW LETTERS 2018; 121:117201. [PMID: 30265101 DOI: 10.1103/physrevlett.121.117201] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Indexed: 06/08/2023]
Abstract
We report an extraordinary pressure dependence of the magnetic interactions in the metal-organic system [CuF_{2}(H_{2}O)_{2}]_{2}pyrazine. At zero pressure, this material realizes a quasi-two-dimensional spin-1/2 square-lattice Heisenberg antiferromagnet. By high-pressure, high-field susceptibility measurements we show that the dominant exchange parameter is reduced continuously by a factor of 2 on compression. Above 18 kbar, a phase transition occurs, inducing an orbital re-ordering that switches the dimensionality, transforming the quasi-two-dimensional lattice into weakly coupled chains. We explain the microscopic mechanisms for both phenomena by combining detailed x-ray and neutron diffraction studies with quantitative modeling using spin-polarized density functional theory.
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Affiliation(s)
- B Wehinger
- Department of Quantum Matter Physics, University of Geneva, 24, Quai Ernest Ansermet, CH-1211 Genève, Switzerland
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
| | - C Fiolka
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - A Lanza
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - R Scatena
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - M Kubus
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - A Grockowiak
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, USA
| | - W A Coniglio
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, USA
| | - D Graf
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, USA
| | - M Skoulatos
- Heinz-Maier-Leibnitz Zentrum and Physics Department, Technische Universität München, Lichtenbergstrasse 1, 85748 Garching, Germany
| | - J-H Chen
- Condensed Matter Theory Group, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
- Theoretical Physics, ETH Zürich, CH-8093 Zürich, Switzerland
| | - J Gukelberger
- Theoretical Physics, ETH Zürich, CH-8093 Zürich, Switzerland
- Département de Physique and Institut Quantique, Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada
| | - N Casati
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
| | - O Zaharko
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
| | - P Macchi
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - K W Krämer
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland
| | - S Tozer
- National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, Florida 32310, USA
| | - C Mudry
- Condensed Matter Theory Group, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
| | - B Normand
- Neutrons and Muons Research Division, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
| | - Ch Rüegg
- Department of Quantum Matter Physics, University of Geneva, 24, Quai Ernest Ansermet, CH-1211 Genève, Switzerland
- Neutrons and Muons Research Division, Paul Scherrer Institute, CH-5232 Villigen-PSI, Switzerland
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Spin susceptibility of charge-ordered YBa 2Cu 3O y across the upper critical field. Proc Natl Acad Sci U S A 2017; 114:13148-13153. [PMID: 29183974 DOI: 10.1073/pnas.1711445114] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The value of the upper critical field Hc2, a fundamental characteristic of the superconducting state, has been subject to strong controversy in high-Tc copper oxides. Since the issue has been tackled almost exclusively by macroscopic techniques so far, there is a clear need for local-probe measurements. Here, we use 17O NMR to measure the spin susceptibility [Formula: see text] of the CuO2 planes at low temperature in charge-ordered YBa2Cu3O y We find that [Formula: see text] increases (most likely linearly) with magnetic field H and saturates above field values ranging from 20 T to 40 T. This result is consistent with the lowest Hc2 values claimed previously and with the interpretation that the charge density wave (CDW) reduces Hc2 in underdoped YBa2Cu3O y Furthermore, the absence of marked deviation in [Formula: see text] at the onset of long-range CDW order indicates that this [Formula: see text] reduction and the Fermi-surface reconstruction are primarily rooted in the short-range CDW order already present in zero field, not in the field-induced long-range CDW order. Above [Formula: see text], the relatively low values of [Formula: see text] at [Formula: see text] K show that the pseudogap is a ground-state property, independent of the superconducting gap.
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Altarawneh MM. Note: radio frequency inductance-capacitance band-stop filter circuit to perform contactless conductivity measurements in pulsed magnetic fields. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2012; 83:096102. [PMID: 23020430 DOI: 10.1063/1.4752414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We present a new technique to perform radio frequency (rf) contactless conductivity measurements in pulsed magnetic fields to probe different ground states in condensed matter physics. The new method utilizes a simple analog band-stop filter circuit implemented in a radio frequency transmission setup to perform contactless conductivity measurements. The new method is more sensitive than the other methods (e.g., the tunnel diode oscillator and the proximity detector oscillator) due to more sensitive dependence of the circuit resonance frequency on the tank circuit inductance (not the transmission line). More important, the new method is more robust than other methods when used to perform measurements in very high magnetic fields, works for a wide range of temperatures (i.e., 300 K-1.4 K) and is less sensitive to noise and mechanical vibrations during pulse magnet operation. The new technique was successfully applied to measure the Shubnikov-de Haas effect in Bi(2)Se(3) in pulsed magnetic fields of up to 60 T.
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Affiliation(s)
- M M Altarawneh
- Department of Physics, Mu'tah University, Mu'tah, Karak 61710, Jordan and NHMFL, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
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