Abstract

The intrinsic transverse-magnetic modes of graphene with spatial dispersion are investigated theoretically in the hydrodynamic regime in a terahertz frequency range. It is revealed that spatial dispersion is caused by the diffusion electron-transport mechanism due to the spreading of electron-concentration gradients under the effect of pressure in an electron liquid. The cases of a screened and unscreened plasmon as well as electron sound are considered.

中文翻译：

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具有空间色散的石墨烯中的流体动力学太赫兹等离子体和电子声

摘要

理论上研究了在太赫兹频率范围内的流体动力学条件下，具有空间分散性的石墨烯的固有横向磁模式。揭示了在电子液体中压力的作用下，由于电子浓度梯度的扩散，空间扩散是由扩散电子传输机制引起的。考虑了屏蔽和非屏蔽等离子体激元以及电子声的情况。