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

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4861576· OSTI ID:22273922

Lin, Shi-Zeng; Reichhardt, Charles; Batista, Cristian D.; Saxena, Avadh ^[1]

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1. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

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.

• OSTI ID: 22273922
• Journal Information: Journal of Applied Physics, Vol. 115, 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); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHIRALITY
ELECTRIC CURRENTS
EQUATIONS OF MOTION
FERROMAGNETIC MATERIALS
FERROMAGNETISM
MAGNETS
PHASE TRANSFORMATIONS
SKYRME POTENTIAL
SOLITONS
SPIN ORIENTATION