Electric-field guiding of magnetic skyrmions
Abstract
We theoretically study equilibrium and dynamic properties of nanosized magnetic skyrmions in thin magnetic films with broken inversion symmetry, where an electric field couples to magnetization via spin-orbit coupling. Based on a symmetry-based phenomenology and micromagnetic simulations we show that this electric-field coupling, via renormalizing the micromagnetic energy, modifies the equilibrium properties of the skyrmion. This change, in turn, results in a significant alteration of the current-induced skyrmion motion. Particularly, the speed and direction of the skyrmion can be manipulated by designing a desired energy landscape electrically, which we describe within Thiele's analytical model and demonstrate in micromagnetic simulations including electric-field-controlled magnetic anisotropy. We additionally use this electric-field control to construct gates for controlling skyrmion motion exhibiting a transistorlike and multiplexerlike function. Furthermore, the proposed electric-field effect can thus provide a low-energy electrical knob to extend the reach of information processing with skyrmions.
- Authors:
-
- Univ. of California, Los Angeles, CA (United States)
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Spins and Heat in Nanoscale Electronic Systems (SHINES)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1370866
- Alternate Identifier(s):
- OSTI ID: 1223584
- Grant/Contract Number:
- SC0012670
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 92; Journal Issue: 13; Related Information: SHINES partners with University of California, Riverside (lead); Arizona State University; Colorado State University; Johns Hopkins University; University of California Irvine; University of California Los Angeles; University of Texas at Austin; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; phonons; thermal conductivity; thermoelectric; spin dynamics; spintronics
Citation Formats
Upadhyaya, Pramey, Yu, Guoqiang, Amiri, Pedram Khalili, and Wang, Kang L. Electric-field guiding of magnetic skyrmions. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.92.134411.
Upadhyaya, Pramey, Yu, Guoqiang, Amiri, Pedram Khalili, & Wang, Kang L. Electric-field guiding of magnetic skyrmions. United States. https://doi.org/10.1103/PhysRevB.92.134411
Upadhyaya, Pramey, Yu, Guoqiang, Amiri, Pedram Khalili, and Wang, Kang L. Thu .
"Electric-field guiding of magnetic skyrmions". United States. https://doi.org/10.1103/PhysRevB.92.134411. https://www.osti.gov/servlets/purl/1370866.
@article{osti_1370866,
title = {Electric-field guiding of magnetic skyrmions},
author = {Upadhyaya, Pramey and Yu, Guoqiang and Amiri, Pedram Khalili and Wang, Kang L.},
abstractNote = {We theoretically study equilibrium and dynamic properties of nanosized magnetic skyrmions in thin magnetic films with broken inversion symmetry, where an electric field couples to magnetization via spin-orbit coupling. Based on a symmetry-based phenomenology and micromagnetic simulations we show that this electric-field coupling, via renormalizing the micromagnetic energy, modifies the equilibrium properties of the skyrmion. This change, in turn, results in a significant alteration of the current-induced skyrmion motion. Particularly, the speed and direction of the skyrmion can be manipulated by designing a desired energy landscape electrically, which we describe within Thiele's analytical model and demonstrate in micromagnetic simulations including electric-field-controlled magnetic anisotropy. We additionally use this electric-field control to construct gates for controlling skyrmion motion exhibiting a transistorlike and multiplexerlike function. Furthermore, the proposed electric-field effect can thus provide a low-energy electrical knob to extend the reach of information processing with skyrmions.},
doi = {10.1103/PhysRevB.92.134411},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 13,
volume = 92,
place = {United States},
year = {Thu Oct 15 00:00:00 EDT 2015},
month = {Thu Oct 15 00:00:00 EDT 2015}
}
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