Spontaneous fluctuations in a magnetic Fe/Gd skyrmion lattice
Abstract
Magnetic skyrmions are topological spin textures that exhibit classical or quantum quasi-particle behavior. A substantial amount of research has occurred in this field, both because of their unique electromagnetic properties and potential application for future nonvolatile memory storage applications, as well as fundamental questions on their topology and unique magnetic phases. Here, we investigate the fluctuation properties of a magnetic Fe/Gd skyrmion lattice, using short-pulsed xrays. We first measure spontaneous fluctuations of the skyrmion lattice phase and find an inherent, collective mode showing an underdamped oscillation with a relaxation of a couple of nanoseconds. Further observations track the response towards the continuous phase transition and a ‘critical-like’ slowing down of fluctuations is observed well before the critical point. These results suggest that the skyrmion lattice phase never fully freezes into a static crystal. This constant state of fluctuation indicates that the physics of topological magnetic phases may have more in common with high-temperature superconductors with disorder.
- Authors:
- more »
- Publication Date:
- Research Org.:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Contributing Org.:
- U.S Office of Naval Research (provided funding but is not on your list), University of Nebraska (Nebraska EPSCoR under the FIRST Award #OIA-1557417), UC San Diego, UC Santa Cruz, Stanford University.
- OSTI Identifier:
- 1820477
- Alternate Identifier(s):
- OSTI ID: 1817694
- Grant/Contract Number:
- AC02-76SF00515; AC02-05-CH11231
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Research
- Additional Journal Information:
- Journal Name: Physical Review Research Journal Volume: 3 Journal Issue: 3; Journal ID: ISSN 2643-1564
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; 97 MATHEMATICS AND COMPUTING; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE; x-rays; coherence; skyrminos; magnetism; ultrafast; resonant scattering; XPCS; XFEL; materials; condensed matter; topological phases; fluctuations
Citation Formats
Seaberg, M. H., Holladay, B., Montoya, S. A., Zheng, X. Y., Lee, J. C. T., Reid, A. H., Koralek, J. D., Shen, L., Esposito, V., Coslovich, G., Walter, P., Zohar, S., Thampy, V., Lin, M. F., Hart, P., Nakahara, K., Streubel, R., Kevan, S. D., Fischer, P., Colocho, W., Lutman, A., Decker, F. -J., Fullerton, E. E., Dunne, M., Roy, S., Sinha, S. K., and Turner, J. J. Spontaneous fluctuations in a magnetic Fe/Gd skyrmion lattice. United States: N. p., 2021.
Web. doi:10.1103/PhysRevResearch.3.033249.
Seaberg, M. H., Holladay, B., Montoya, S. A., Zheng, X. Y., Lee, J. C. T., Reid, A. H., Koralek, J. D., Shen, L., Esposito, V., Coslovich, G., Walter, P., Zohar, S., Thampy, V., Lin, M. F., Hart, P., Nakahara, K., Streubel, R., Kevan, S. D., Fischer, P., Colocho, W., Lutman, A., Decker, F. -J., Fullerton, E. E., Dunne, M., Roy, S., Sinha, S. K., & Turner, J. J. Spontaneous fluctuations in a magnetic Fe/Gd skyrmion lattice. United States. https://doi.org/10.1103/PhysRevResearch.3.033249
Seaberg, M. H., Holladay, B., Montoya, S. A., Zheng, X. Y., Lee, J. C. T., Reid, A. H., Koralek, J. D., Shen, L., Esposito, V., Coslovich, G., Walter, P., Zohar, S., Thampy, V., Lin, M. F., Hart, P., Nakahara, K., Streubel, R., Kevan, S. D., Fischer, P., Colocho, W., Lutman, A., Decker, F. -J., Fullerton, E. E., Dunne, M., Roy, S., Sinha, S. K., and Turner, J. J. Wed .
"Spontaneous fluctuations in a magnetic Fe/Gd skyrmion lattice". United States. https://doi.org/10.1103/PhysRevResearch.3.033249.
@article{osti_1820477,
title = {Spontaneous fluctuations in a magnetic Fe/Gd skyrmion lattice},
author = {Seaberg, M. H. and Holladay, B. and Montoya, S. A. and Zheng, X. Y. and Lee, J. C. T. and Reid, A. H. and Koralek, J. D. and Shen, L. and Esposito, V. and Coslovich, G. and Walter, P. and Zohar, S. and Thampy, V. and Lin, M. F. and Hart, P. and Nakahara, K. and Streubel, R. and Kevan, S. D. and Fischer, P. and Colocho, W. and Lutman, A. and Decker, F. -J. and Fullerton, E. E. and Dunne, M. and Roy, S. and Sinha, S. K. and Turner, J. J.},
abstractNote = {Magnetic skyrmions are topological spin textures that exhibit classical or quantum quasi-particle behavior. A substantial amount of research has occurred in this field, both because of their unique electromagnetic properties and potential application for future nonvolatile memory storage applications, as well as fundamental questions on their topology and unique magnetic phases. Here, we investigate the fluctuation properties of a magnetic Fe/Gd skyrmion lattice, using short-pulsed xrays. We first measure spontaneous fluctuations of the skyrmion lattice phase and find an inherent, collective mode showing an underdamped oscillation with a relaxation of a couple of nanoseconds. Further observations track the response towards the continuous phase transition and a ‘critical-like’ slowing down of fluctuations is observed well before the critical point. These results suggest that the skyrmion lattice phase never fully freezes into a static crystal. This constant state of fluctuation indicates that the physics of topological magnetic phases may have more in common with high-temperature superconductors with disorder.},
doi = {10.1103/PhysRevResearch.3.033249},
journal = {Physical Review Research},
number = 3,
volume = 3,
place = {United States},
year = {Wed Sep 15 00:00:00 EDT 2021},
month = {Wed Sep 15 00:00:00 EDT 2021}
}
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