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Excitation modes of vortices in submicron magnetic disks

机译:亚微米磁盘中涡旋的激发模式

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摘要

Classical and quantum theory of spin waves in the vortex state of a mesoscopic submicron magnetic disk have been developed with account of the finite mass density of the vortex. Oscillations of the vortex core resemble oscillations of a charged string in a potential well in the presence of the magnetic field. A conventional gyrotropic frequency appears as a gap in the spectrum of spin waves of the vortex. The mass of the vortex has been computed, and the result agrees with experimental findings. The finite vortex mass generates a high-frequency branch of spin waves. The effects of an external magnetic field and dissipation have been addressed.
机译:考虑到涡旋的有限质量密度,已经发展了介观亚微米磁盘的涡旋状态下的自旋波的经典和量子理论。涡流核的振荡类似于在存在磁场的情况下势阱中带电弦的振荡。常规的回旋频率作为涡旋自旋波谱中的间隙出现。已经计算出涡旋的质量,其结果与实验结果一致。有限涡旋质量产生自旋波的高频分支。已经解决了外部磁场和耗散的影响。

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  • 来源
    《Physical review》 |2013年第1期|014413.1-014413.11|共11页
  • 作者单位

    Departament de Fisica Fonamental, Facultat de Fisica, Universitat de Barcelona, Avinguda Diagonal 645, 08028 Barcelona, Spain,Physics Department, Lehman College, The City University of New York, 250 Bedford Park Boulevard West, Bronx,New York 10468-1589, USA;

    Physics Department, Lehman College, The City University of New York, 250 Bedford Park Boulevard West, Bronx,New York 10468-1589, USA;

    Departament de Fisica Fonamental, Facultat de Fisica, Universitat de Barcelona, Avinguda Diagonal 645, 08028 Barcelona, Spain;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance; classical spin models; quantized spin models;

    机译:铁磁;反铁磁和亚铁磁谐振;自旋波共振;经典自旋模型;量化自旋模型;

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