Edge instability in a chiral stripe domain under an electric current and skyrmion generation
Abstract
Motivated by the recent experimental observations on the skyrmion creation by cutting chiral stripe domains under a current drive [Jiang et al., Science 349, 283 (2015)], we study the mechanism of skyrmion generation by simulating the dynamics of stripe domains. Our theory for skyrmion generation is based on the fact that there are two half skyrmions attached to the ends of a stripe domain. These half skyrmions move due to the coupling between the skyrmion topological charge and current. As a consequence, the stripe domain is bent or stretched depending on the direction of motion of the half skyrmions. For a large current, skyrmions are created by chopping the stripe domains via strong bending or stretching. Our theory provides an explanation to the experiments and is supported by the new experiments. Moreover, we predict that skyrmions can also be generated using a Bloch stripe domain under a spin transfer torque which can be realized in B20 compounds.
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1312572
- Alternate Identifier(s):
- OSTI ID: 1260293
- Report Number(s):
- LA-UR-15-28632
Journal ID: ISSN 2469-9950; PRBMDO
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 2; 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; Material Science
Citation Formats
Lin, Shi -Zeng. Edge instability in a chiral stripe domain under an electric current and skyrmion generation. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.94.020402.
Lin, Shi -Zeng. Edge instability in a chiral stripe domain under an electric current and skyrmion generation. United States. https://doi.org/10.1103/PhysRevB.94.020402
Lin, Shi -Zeng. Tue .
"Edge instability in a chiral stripe domain under an electric current and skyrmion generation". United States. https://doi.org/10.1103/PhysRevB.94.020402. https://www.osti.gov/servlets/purl/1312572.
@article{osti_1312572,
title = {Edge instability in a chiral stripe domain under an electric current and skyrmion generation},
author = {Lin, Shi -Zeng},
abstractNote = {Motivated by the recent experimental observations on the skyrmion creation by cutting chiral stripe domains under a current drive [Jiang et al., Science 349, 283 (2015)], we study the mechanism of skyrmion generation by simulating the dynamics of stripe domains. Our theory for skyrmion generation is based on the fact that there are two half skyrmions attached to the ends of a stripe domain. These half skyrmions move due to the coupling between the skyrmion topological charge and current. As a consequence, the stripe domain is bent or stretched depending on the direction of motion of the half skyrmions. For a large current, skyrmions are created by chopping the stripe domains via strong bending or stretching. Our theory provides an explanation to the experiments and is supported by the new experiments. Moreover, we predict that skyrmions can also be generated using a Bloch stripe domain under a spin transfer torque which can be realized in B20 compounds.},
doi = {10.1103/PhysRevB.94.020402},
journal = {Physical Review B},
number = 2,
volume = 94,
place = {United States},
year = {Tue Jul 05 00:00:00 EDT 2016},
month = {Tue Jul 05 00:00:00 EDT 2016}
}
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