标题:Magnetization precession by short-wavelength magnon excitations and spin-transfer torque
作者:Qiao, Shizhu; Yan, Shishen; Kang, Shishou; Li, Qiang; Qin, Yufeng; Zhao, Yinrui; Zhang, Zhiyu; Li, Shuqing
作者机构:[Qiao, Shizhu; Zhang, Zhiyu; Li, Shuqing] Taiyuan Inst Technol, Dept Sci, Taiyuan 030008, Shanxi, Peoples R China.; [Yan, Shishen; Kang, Shishou; Zh 更多
通讯作者:Yan, SS;Yan, Shishen
通讯作者地址:[Yan, SS]Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China.
来源:PHYSICAL REVIEW B
出版年:2018
卷:97
期:2
DOI:10.1103/PhysRevB.97.024424
摘要:The Bloch-Bloembergen equation is extended to study the magnetization precession in a spin-valve structure by taking into account the short-wavelength magnon excitation and spin-transfer torque. A stable magnetization precession is achieved when the transverse relaxation time T-2 is longer than the longitudinal relaxation time T-1. A wide current-density window of stable magnetization precession is found for large T-2 and it broadens with increasing T-2 for fixed T-1. Our simulation results also reveal that short-wavelength magnon excitation can reduce the amplitude of the magnetization precession, which is different from the prediction of the macro-spin Landau-Lifshitz-Gilbert-Slonczewski equation.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:1
Scopus被引频次:1
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85040943311&doi=10.1103%2fPhysRevB.97.024424&partnerID=40&md5=6236d5879105098d54a805eb4e6f59fa
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