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arXiv 1209.1375cond-mat.mes-hall
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亚微米磁盘中涡旋的激发模式

Excitation modes of vortices in sub-micron magnetic disks

Ricardo Zarzuela, Eugene Chudnovsky, Javier Tejada

摘要:

在考虑涡旋有限质量密度的情况下,发展了介观亚微米磁盘涡旋态自旋波的经典和量子理论。涡核的振荡类似于存在磁场时势阱中带电弦的振荡。常规的陀螺频率在涡旋的自旋波频谱中表现为间隙。已计算出的旋涡的质量与实验结果一致。有限的涡流质量产生自旋波的高频分支。外部磁场和耗散的影响已经解决。

英文摘要:

Classical and quantum theory of spin waves in the vortex state of a mesoscopic sub-micron magnetic disk has 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. Conventional gyroscopic frequency appears as a gap in the spectrum of spin waves of the vortex. The mass of the vortex has been computed that agrees with experimental findings. Finite vortex mass generates a high-frequency branch of spin waves. Effects of the external magnetic field and dissipation have been addressed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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