Mass of a skyrmion under a driving current

被引：10

作者：

Martinez, J. C. ^{[1
]}

Jalil, M. B. A. ^{[1
]}

机构：

[1] Natl Univ Singapore, Computat Nanoelect & Nanodevice Lab, 4 Engn Dr 3, Singapore 117576, Singapore

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 424卷

基金：

新加坡国家研究基金会;

关键词：

Landau-Lifshitz-Gilbert equation; Thiele equation; Skyrmion; MAGNETIZATION DYNAMICS; MOTION;

D O I：

10.1016/j.jmmm.2016.10.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present arguments for a mass term in the Landau-Lifshitz-Gilbert equation based on the notion of mass as an inertial quantity. From trajectories of skyrmions in a confining potential and a 1-D potential we see evidence for a mass-inertia connection. We derive an expression for the effective mass for skyrmions, 1.6 epsilon x 10(-23) kg, where e accounts for the mismatch between the local magnetic moment induced on the conduction electrons and its corresponding effect on the current-driven skyrmion and varies from 10(-2) to 1.

引用

页码：291 / 297

页数：7

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