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Singh A, Lee JCT, Avila KE, Chen Y, Montoya SA, Fullerton EE, Fischer P, Dahmen KA, Kevan SD, Sanyal MK, Roy S. Publisher Correction: Scaling of domain cascades in stripe and skyrmion phases. Nat Commun 2019; 10:2325. [PMID: 31113946 PMCID: PMC6529465 DOI: 10.1038/s41467-019-10314-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- A Singh
- Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata, West Bengal, 700064, India
| | - J C T Lee
- Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.,Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA
| | - K E Avila
- Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Y Chen
- Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA
| | - S A Montoya
- Center for Memory and Recording Research, University of California San Diego, La Jolla, CA, 92093, USA
| | - E E Fullerton
- Center for Memory and Recording Research, University of California San Diego, La Jolla, CA, 92093, USA
| | - P Fischer
- Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.,Department of Physics, University of California, Santa Cruz, CA, 95064, USA
| | - K A Dahmen
- Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - S D Kevan
- Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA
| | - M K Sanyal
- Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata, West Bengal, 700064, India
| | - S Roy
- Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.
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Singh A, Lee JCT, Avila KE, Chen Y, Montoya SA, Fullerton EE, Fischer P, Dahmen KA, Kevan SD, Sanyal MK, Roy S. Scaling of domain cascades in stripe and skyrmion phases. Nat Commun 2019; 10:1988. [PMID: 31040276 PMCID: PMC6491444 DOI: 10.1038/s41467-019-09934-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 04/09/2019] [Indexed: 11/30/2022] Open
Abstract
The origin of deterministic macroscopic properties often lies in microscopic stochastic motion. Magnetic fluctuations that manifest as domain avalanches and chaotic magnetization jumps exemplify such stochastic motion and have been studied in great detail. Here we report Fourier space studies of avalanches in a system exhibiting competing magnetic stripe and skyrmion phase using a soft X-ray speckle metrology technique. We demonstrate the existence of phase boundaries and underlying critical points in the stripe and skyrmion phases. We found that distinct scaling and universality classes are associated with these domain topologies. The magnitude and frequency of abrupt magnetic domain jumps observed in the stripe phase are dramatically reduced in the skyrmion phase. Our results provide an incisive way to probe and understand phase stability in systems exhibiting complex spin topologies. Switching of magnetic materials often occurs through discrete random avalanches. Singh et al. observe sharply reduced avalanches in the topologically protected skyrmion phase of a Fe/Gd heterostructure and obtain different critical behaviour in the stripe and skyrmion phases, suggesting distinct universality classes.
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Affiliation(s)
- A Singh
- Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata, West Bengal, 700064, India
| | - J C T Lee
- Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.,Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA
| | - K E Avila
- Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - Y Chen
- Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA
| | - S A Montoya
- Center for Memory and Recording Research, University of California San Diego, La Jolla, CA, 92093, USA
| | - E E Fullerton
- Center for Memory and Recording Research, University of California San Diego, La Jolla, CA, 92093, USA
| | - P Fischer
- Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.,Department of Physics, University of California, Santa Cruz, CA, 95064, USA
| | - K A Dahmen
- Department of Physics, University of Illinois Urbana-Champaign, Urbana, IL, 61801, USA
| | - S D Kevan
- Materials Sciences Division, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA
| | - M K Sanyal
- Saha Institute of Nuclear Physics, HBNI, 1/AF Bidhannagar, Kolkata, West Bengal, 700064, India
| | - S Roy
- Advanced Light Source, Lawrence Berkeley National Lab, Berkeley, CA, 94720, USA.
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Seaberg MH, Holladay B, Lee JCT, Sikorski M, Reid AH, Montoya SA, Dakovski GL, Koralek JD, Coslovich G, Moeller S, Schlotter WF, Streubel R, Kevan SD, Fischer P, Fullerton EE, Turner JL, Decker FJ, Sinha SK, Roy S, Turner JJ. Nanosecond X-Ray Photon Correlation Spectroscopy on Magnetic Skyrmions. Phys Rev Lett 2017; 119:067403. [PMID: 28949638 DOI: 10.1103/physrevlett.119.067403] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Indexed: 06/07/2023]
Abstract
We report an x-ray photon correlation spectroscopy method that exploits the recent development of the two-pulse mode at the Linac Coherent Light Source. By using coherent resonant x-ray magnetic scattering, we studied spontaneous fluctuations on nanosecond time scales in thin films of multilayered Fe/Gd that exhibit ordered stripe and Skyrmion lattice phases. The correlation time of the fluctuations was found to differ between the Skyrmion phase and near the stripe-Skyrmion boundary. This technique will enable a significant new area of research on the study of equilibrium fluctuations in condensed matter.
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Affiliation(s)
- M H Seaberg
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - B Holladay
- Department of Physics, University of California-San Diego, La Jolla, California 92093, USA
| | - J C T Lee
- Department of Physics, University of Oregon, Eugene, Oregon 97401, USA
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M Sikorski
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - A H Reid
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - S A Montoya
- Center for Memory and Recording Research, University of California-San Diego, La Jolla, California 92093, USA
- Department of Electrical and Computer Engineering, University of California-San Diego, La Jolla, California 92093, USA
| | - G L Dakovski
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - J D Koralek
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - G Coslovich
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - S Moeller
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - W F Schlotter
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - R Streubel
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - S D Kevan
- Department of Physics, University of Oregon, Eugene, Oregon 97401, USA
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - P Fischer
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - E E Fullerton
- Center for Memory and Recording Research, University of California-San Diego, La Jolla, California 92093, USA
- Department of Electrical and Computer Engineering, University of California-San Diego, La Jolla, California 92093, USA
| | - J L Turner
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - F-J Decker
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
| | - S K Sinha
- Department of Physics, University of California-San Diego, La Jolla, California 92093, USA
| | - S Roy
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J J Turner
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94720, USA
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Langner MC, Roy S, Mishra SK, Lee JCT, Shi XW, Hossain MA, Chuang YD, Seki S, Tokura Y, Kevan SD, Schoenlein RW. Coupled Skyrmion sublattices in Cu(2)OSeO(3). Phys Rev Lett 2014; 112:167202. [PMID: 24815665 DOI: 10.1103/physrevlett.112.167202] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Indexed: 05/27/2023]
Abstract
We report the observation of a Skyrmion lattice in the chiral multiferroic insulator Cu2OSeO3 using Cu L3-edge resonant soft x-ray diffraction. We observe the unexpected existence of two distinct Skyrmion sublattices that arise from inequivalent Cu sites with chemically identical coordination numbers but different magnetically active orbitals. The Skyrmion sublattices are rotated with respect to each other, implying a long wavelength modulation of the lattice. The modulation vector is controlled with an applied magnetic field, associating this moirélike phase with a continuous phase transition. Our findings will open up a new class of science involving manipulation of quantum topological states.
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Affiliation(s)
- M C Langner
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - S Roy
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - S K Mishra
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J C T Lee
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - X W Shi
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - M A Hossain
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - Y-D Chuang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - S Seki
- RIKEN, Center for Emergent Matter Science, Wako 351-0198, Japan and PRESTO, Japan Science and Technology Agency, Tokyo 102-0075, Japan
| | - Y Tokura
- RIKEN, Center for Emergent Matter Science, Wako 351-0198, Japan and Department of Applied Physics and Quantum Phase Electronics Center, University of Tokyo, Tokyo 113-8656, Japan
| | - S D Kevan
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA and Department of Physics, University of Oregon, Eugene, Oregon 97401, USA
| | - R W Schoenlein
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
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Smadici S, Lee JCT, Logvenov G, Bozovic I, Abbamonte P. Form factor dispersion at La M5,4 edges and average density of resonant atoms. J Phys Condens Matter 2014; 26:025303. [PMID: 24318961 DOI: 10.1088/0953-8984/26/2/025303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Resonant soft x-ray scattering on complex oxide superlattices shows very large variations in the superlattice reflection position and intensity near La M5,4 edges. Resonant dispersion of the La x-ray form factor describes the observations well. We determine the average density of resonant La atoms and the thickness of superlattice layers.
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Affiliation(s)
- S Smadici
- Department of Physics and Astronomy, University of Louisville, KY 40292, USA. Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, IL 61801, USA
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Yuan S, Kim M, Seeley JT, Lee JCT, Lal S, Abbamonte P, Cooper SL. Inelastic light scattering measurements of a pressure-induced quantum liquid in KCuF3. Phys Rev Lett 2012; 109:217402. [PMID: 23215614 DOI: 10.1103/physrevlett.109.217402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 06/12/2012] [Indexed: 06/01/2023]
Abstract
Pressure-dependent, low-temperature inelastic light (Raman) scattering measurements of KCuF(3) show that applied pressure above P* ~ 7 kbar suppresses a previously observed structural phase transition temperature to zero temperature in KCuF(3), resulting in the development of a fluctuational (quasielastic) response near T ~ 0 K. This pressure-induced fluctuational response--which we associate with slow fluctuations of the CuF(6) octahedral orientation--is temperature independent and exhibits a characteristic fluctuation rate that is much larger than the temperature, consistent with quantum fluctuations of the CuF(6) octahedra. A model of pseudospin-phonon coupling provides a qualitative description of both the temperature- and pressure-dependent evolution of the Raman spectra of KCuF(3).
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Affiliation(s)
- S Yuan
- Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA
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Smadici S, Lee JCT, Wang S, Abbamonte P, Logvenov G, Gozar A, Cavellin CD, Bozovic I. Superconducting transition at 38 K in insulating-overdoped La2CuO4-La1.64Sr0.36CuO4 superlattices: evidence for interface electronic redistribution from resonant soft X-ray scattering. Phys Rev Lett 2009; 102:107004. [PMID: 19392148 DOI: 10.1103/physrevlett.102.107004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2008] [Indexed: 05/27/2023]
Abstract
We use resonant soft x-ray scattering (RSXS) to quantify the hole distribution in a superlattice of insulating La2CuO4 (LCO) and overdoped La2-xSrxCuO4 (LSCO). Despite its nonsuperconducting constituents, this structure is superconducting with T_{c}=38 K. We found that the conducting holes redistribute electronically from LSCO to the LCO layers. The LCO layers were found to be optimally doped, suggesting they are the main drivers of superconductivity. Our results demonstrate the utility of RSXS for separating electronic from structural effects at oxide interfaces.
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Affiliation(s)
- S Smadici
- Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA
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