论文标题

混合电子气体渗透导体结构中的集体模式之间的相互作用

Interplay between collective modes in hybrid electron gas-superconductor structures

论文作者

Boev, M. V., Savenko, I. G., Kovalev, V. M.

论文摘要

我们研究了混合系统中集体等离子体和卡尔森 - 戈尔曼 - 沃尔科夫模式的杂交,由正常状态和超导体中的二维电子层组成,由远程库仑力耦合。这些集体模式之间的相互作用是在常规的单层二维系统中不可能的,因为它们存在于无量纲参数$ωτ$的非重叠域中,其中$ω$是外部电磁场频率,$τ$是电子散射时间。因此,在单层结构中,这些模式是相互排斥的。但是,在由两个具有不同特性的空间材料中的分离的混合系统中,耦合可能会成为可能,尤其是电子散射时间。我们研究了混合系统的电磁功率吸收,并揭示了集体模式杂交所需的条件。

We study hybridization of collective plasmon and Carlson-Goldman-Artemenko-Volkov modes in a hybrid system, consisting of a two-dimensional layers of electron gas in the normal state and superconductor, coupled by long-range Coulomb forces. The interaction between these collective modes is not possible in a regular single-layer two-dimensional system since they exist in non-overlapping domains of dimensionless parameter $ωτ$, where $ω$ is the external electromagnetic field frequency and $τ$ is electron scattering time. Thus, in a single-layer structure, these modes are mutually exclusive. However, the coupling may become possible in a hybrid system consisting of two separated in space materials with different properties, in particular, the electron scattering time. We investigate the electromagnetic power absorption by the hybrid system and reveal the conditions necessary for the hybridization of collective modes.

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