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Title: Dynamics of skyrmions in chiral magnets: Dynamic phase transitions and equation of motion

Abstract

We study the dynamics of skyrmions in a metallic chiral magnet. First, we show that skyrmions can be created dynamically by destabilizing the ferromagnetic background state through a spin polarized current. We then treat skyrmions as rigid particles and derive the corresponding equation of motion. The dynamics of skyrmions is dominated by the Magnus force, which accounts for the weak pinning of skyrmions observed in experiments. Finally, we discuss the quantum motion of skyrmions.

Authors:
; ; ;  [1]
  1. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
22273922
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CHIRALITY; ELECTRIC CURRENTS; EQUATIONS OF MOTION; FERROMAGNETIC MATERIALS; FERROMAGNETISM; MAGNETS; PHASE TRANSFORMATIONS; SKYRME POTENTIAL; SOLITONS; SPIN ORIENTATION

Citation Formats

Lin, Shi-Zeng, Reichhardt, Charles, Batista, Cristian D., and Saxena, Avadh. Dynamics of skyrmions in chiral magnets: Dynamic phase transitions and equation of motion. United States: N. p., 2014. Web. doi:10.1063/1.4861576.
Lin, Shi-Zeng, Reichhardt, Charles, Batista, Cristian D., & Saxena, Avadh. Dynamics of skyrmions in chiral magnets: Dynamic phase transitions and equation of motion. United States. https://doi.org/10.1063/1.4861576
Lin, Shi-Zeng, Reichhardt, Charles, Batista, Cristian D., and Saxena, Avadh. 2014. "Dynamics of skyrmions in chiral magnets: Dynamic phase transitions and equation of motion". United States. https://doi.org/10.1063/1.4861576.
@article{osti_22273922,
title = {Dynamics of skyrmions in chiral magnets: Dynamic phase transitions and equation of motion},
author = {Lin, Shi-Zeng and Reichhardt, Charles and Batista, Cristian D. and Saxena, Avadh},
abstractNote = {We study the dynamics of skyrmions in a metallic chiral magnet. First, we show that skyrmions can be created dynamically by destabilizing the ferromagnetic background state through a spin polarized current. We then treat skyrmions as rigid particles and derive the corresponding equation of motion. The dynamics of skyrmions is dominated by the Magnus force, which accounts for the weak pinning of skyrmions observed in experiments. Finally, we discuss the quantum motion of skyrmions.},
doi = {10.1063/1.4861576},
url = {https://www.osti.gov/biblio/22273922}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 115,
place = {United States},
year = {Wed May 07 00:00:00 EDT 2014},
month = {Wed May 07 00:00:00 EDT 2014}
}