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Three-dimensional structure of hybrid magnetic skyrmions determined by neutron scattering
Abstract
Magnetic skyrmions are topologically protected chiral spin textures which present opportunities for next-generation magnetic data storage and logic information technologies. The topology of these structures originates in the geometric configuration of the magnetic spins, more generally described as the structure. While the skyrmion structure is most often depicted using a two-dimensional projection of the three-dimensional (3D) structure, recent works have emphasized the role of all three dimensions in determining the topology and their response to external stimuli. Here, grazing-incidence small-angle neutron scattering and polarized neutron reflectometry are used to determine the 3D structure of hybrid skyrmions. The structure of the hybrid skyrmions, which includes a combination of Néel-like and Bloch-like components along their length, is expected to significantly contribute to their notable stability, which includes ambient conditions. To interpret the neutron scattering data, micromagnetic simulations of the hybrid skyrmions were performed, and the corresponding diffraction patterns were determined using a Born approximation transformation. The converged magnetic profile reveals the magnetic structure along with the skyrmion depth profile, including the thickness of the Bloch and Néel segments and the diameter of the core.
- Authors:
-
[2];
[5];
- Univ. of Tennessee, Knoxville, TN (United States)
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
- Univ. of California, San Diego, CA (United States)
- Univ. Paris-Saclay, Palaiseau (France)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1973349
- Grant/Contract Number:
- AC05-00OR22725; SC0021344; SC0003678; DMR-2010792
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 107; Journal Issue: 18; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; skyrmions; neutron scattering; micromagnetic modeling
Citation Formats
Liyanage, W. L. N. C., Tang, Nan, Quigley, Lizabeth, Borchers, Julie A., Grutter, Alexander J., Maranville, Brian B., Sinha, Sunil K., Reyren, Nicolas, Montoya, Sergio A., Fullerton, Eric E., DeBeer-Schmitt, Lisa, and Gilbert, Dustin A. Three-dimensional structure of hybrid magnetic skyrmions determined by neutron scattering. United States: N. p., 2023.
Web. doi:10.1103/physrevb.107.184412.
Liyanage, W. L. N. C., Tang, Nan, Quigley, Lizabeth, Borchers, Julie A., Grutter, Alexander J., Maranville, Brian B., Sinha, Sunil K., Reyren, Nicolas, Montoya, Sergio A., Fullerton, Eric E., DeBeer-Schmitt, Lisa, & Gilbert, Dustin A. Three-dimensional structure of hybrid magnetic skyrmions determined by neutron scattering. United States. https://doi.org/10.1103/physrevb.107.184412
Liyanage, W. L. N. C., Tang, Nan, Quigley, Lizabeth, Borchers, Julie A., Grutter, Alexander J., Maranville, Brian B., Sinha, Sunil K., Reyren, Nicolas, Montoya, Sergio A., Fullerton, Eric E., DeBeer-Schmitt, Lisa, and Gilbert, Dustin A. Fri .
"Three-dimensional structure of hybrid magnetic skyrmions determined by neutron scattering". United States. https://doi.org/10.1103/physrevb.107.184412.
@article{osti_1973349,
title = {Three-dimensional structure of hybrid magnetic skyrmions determined by neutron scattering},
author = {Liyanage, W. L. N. C. and Tang, Nan and Quigley, Lizabeth and Borchers, Julie A. and Grutter, Alexander J. and Maranville, Brian B. and Sinha, Sunil K. and Reyren, Nicolas and Montoya, Sergio A. and Fullerton, Eric E. and DeBeer-Schmitt, Lisa and Gilbert, Dustin A.},
abstractNote = {Magnetic skyrmions are topologically protected chiral spin textures which present opportunities for next-generation magnetic data storage and logic information technologies. The topology of these structures originates in the geometric configuration of the magnetic spins, more generally described as the structure. While the skyrmion structure is most often depicted using a two-dimensional projection of the three-dimensional (3D) structure, recent works have emphasized the role of all three dimensions in determining the topology and their response to external stimuli. Here, grazing-incidence small-angle neutron scattering and polarized neutron reflectometry are used to determine the 3D structure of hybrid skyrmions. The structure of the hybrid skyrmions, which includes a combination of Néel-like and Bloch-like components along their length, is expected to significantly contribute to their notable stability, which includes ambient conditions. To interpret the neutron scattering data, micromagnetic simulations of the hybrid skyrmions were performed, and the corresponding diffraction patterns were determined using a Born approximation transformation. The converged magnetic profile reveals the magnetic structure along with the skyrmion depth profile, including the thickness of the Bloch and Néel segments and the diameter of the core.},
doi = {10.1103/physrevb.107.184412},
journal = {Physical Review. B},
number = 18,
volume = 107,
place = {United States},
year = {Fri May 05 00:00:00 EDT 2023},
month = {Fri May 05 00:00:00 EDT 2023}
}
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