Dzyaloshinskii-Moriya domain wall resonance in ferromagnetic nanowires with a spin-transfer torque

被引：12
|
作者：
Li, Zai-Dong [1 ]
Liu, Fei [1 ]
Li, Qiu-Yan [1 ]
He, P. B. [2 ]
机构：
[1] Hebei Univ Technol, Dept Appl Phys, Tianjin 300401, Peoples R China
[2] Hunan Univ, Sch Phys & Elect, Changsha 410082, Hunan, Peoples R China
来源：
JOURNAL OF APPLIED PHYSICS | 2015年 / 117卷 / 17期
关键词：
REAL-SPACE OBSERVATION; SKYRMION LATTICE; MOTION; DYNAMICS; DRIVEN; PROPAGATION; PHASE; ORDER;
D O I：
10.1063/1.4919676
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We theoretically investigate the current-induced domain wall resonance in ferromagnetic nanowires with a Dzyaloshinskii-Moriya interaction. The adiabatic and nonadiabatic torques distort the wall's internal structure and exert a global pressure on the wall. An effective Newton's equation is obtained analytically for a domain wall moving in one-dimensional potential and subject to a viscous friction and a driving force. Our results demonstrate that the Dzyaloshinskii-Moriya interaction affects the critical current density for depinning the wall, resonance frequency, and amplitude. (C) 2015 AIP Publishing LLC.
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页数：5
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