تقرير
Diffusion of a magnetic skyrmion in 2-dimensional space
| العنوان: | Diffusion of a magnetic skyrmion in 2-dimensional space |
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| المؤلفون: | Suzuki, Yoshishige, Miki, Soma, Tamura, Eiiti |
| المصدر: | Physics Letters A Volume 413, 18 October 2021, 127603 |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Statistical Mechanics |
| الوصف: | Two-dimensional magnetic skyrmions are particle-like magnetic domains in magnetic thin films. The kinetic property of the magnetic skyrmions at finite temperature is well described by the Thiele equation, including a stochastic field and a finite mass. In this paper, the validity of the constant-mass approximation is examined by comparing the Fourier spectrum of Brownian motions described by the Thiele equation and the Landau-Lifshitz-Gilbert equation. Then, the 4-dimensional Fokker-Planck equation is derived from the Thiele equation with a mass-term. Consequently, an expression of the diffusion flow and diffusion constant in a tensor form is derived, extending Chandrasekhar's method for Thiele dynamics. Comment: 13 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physleta.2021.127603 |
| URL الوصول: | http://arxiv.org/abs/2104.02345 |
| رقم الأكسشن: | edsarx.2104.02345 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.physleta.2021.127603 |
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