Dispersion relation of surface magneto-plasmons

Deepika, P. Chauhan, A. Varshney, V. Sajal
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Abstract

Surface plasmons are collective oscillations of free electrons, having electromagnetic fields localized at the metal-vacuum interface. Configuration of two metal surfaces separated by a vacuum region is used for the study. Surface plasma waves having amplitude maximum at the two metal-vacuum interfaces and minimum in the middle are investigated by deriving the relevant dispersion relation in the presence of external static magnetic field. By this dispersion relation, an analytical function for the wave vector in terms of the phase velocity and the cyclotron frequencies are established. Dispersion relation is compared by varyirng the direction and strength of static magnetic field Bs.
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表面磁等离子体的色散关系
表面等离子体是自由电子的集体振荡,电磁场定域于金属-真空界面。研究中使用了由真空区域分隔的两个金属表面的结构。通过推导出在外加静磁场作用下的色散关系,研究了在两个金属-真空界面处振幅最大、中间振幅最小的表面等离子体波。利用这种色散关系,建立了波矢量关于相速度和回旋加速器频率的解析函数。通过改变静磁场的方向和强度,比较了色散关系。
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