Steady vortex gyrotropic motion driven by an out-of-plane spin-polarized current in a confined nanocontact structure

被引：1

作者：

Liu, Yan ^{[1
]}

Li, Huanan ^{[1
]}

Hu, Yong ^{[1
]}

Du, An ^{[1
]}

机构：

[1] Northeastern Univ, Coll Sci, Shenyang 110819, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2015年 / 201卷

基金：

中国国家自然科学基金;

关键词：

Vortex; Nanocontact structure; Gyrotropic motion;

D O I：

10.1016/j.ssc.2014.10.004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We studied the steady vortex gyrotropic motion in a Permalloy nanodot driven by an out-of-plane spinpolarized current which is injected through a nanocontact. First, we calculated the current density range in which the vortex steady motion can exist. It is found that both the nanocontact dimensions and dot aspect ratios have influence on it. Then the orbital radius and oscillation frequency of the steady motion in the plane of current density and nanocontact radius were diagramed. It indicated that smaller nanocontact corresponds to wider frequency range. (C) 2014 Elsevier Ltd. All rights reserved

引用

页码：40 / 42

页数：3