石墨烯
太赫兹辐射
光电子学
异质结
等离子体子
材料科学
量子隧道
响应度
范德瓦尔斯力
纳米技术
物理
光电探测器
分子
量子力学
作者
Taiichi Otsuji,А. А. Дубинов,V. Ya. Aleshkin,Dmitry Svintsov,M. Ryzhii,Stéphane Boubanga Tombet,Deepika Yadav,Akira Satou,Vladimir Mitin,M. S. Shur,V. Ryzhii
摘要
This paper reviews recent advances in the research of graphene-based van der Waals heterostructures for emission and detection of terahertz radiation. A gated double-graphene-layer (DGL) nanocapacitor is the core shell under consideration, in which a thin tunnel barrier layer is sandwiched by outer graphene layers at both sides. The DGL can support symmetric optical and anti-symmetric acoustic coupled plasmon modes in the GLs. The latter mode can modulate the band-offset between the GL, giving rise to modulation of the inter-GL-layer resonant tunneling. This can dramatically enhance the THz gain or responsivity via plasmon-assisted inter-GL resonant tunneling.
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