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Cooperative promotion of plasma instabilities for emission of terahertz radiation in an asymmetric dual-grating-gate graphene-channel FET

机译:在非对称双栅栅石墨烯通道FET中协同促进等离子体不稳定性以发射太赫兹辐射

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摘要

We study instability of plasmons in a dual-grating-gate graphene field-effect transistor induced by dc current injection using self-consistent simulations with the Boltzmann equation. With ultimately high-quality graphene where the electron scattering is only limited by acoustic phonons, it is demonstrated that a total growth rate of the plasmon instability, with the terahertz/mid-infrared range of the frequency, can exceed 4 × 10~(12) s~(-1) at room temperature, which is an order of magnitude larger than in two-dimensional electron gases based on usual semiconductors. We show that the giant total growth rate originates from cooperative promotion of the so-called Dyakonov-Shur and Ryzhii-Satou-Shur instabilities.
机译:我们使用具有Boltzmann方程的自洽模拟研究了直流电注入引起的双栅栅石墨烯场效应晶体管中等离激元的不稳定性。最终使用高质量的石墨烯(其中电子散射仅受声子限制),证明等离子激元不稳定性的总增长率(在太赫兹/中红外频率范围内)可以超过4×10〜(12 )s〜(-1)在室温下,比基于常规半导体的二维电子气大一个数量级。我们表明,巨大的总增长率源自所谓的Dyakonov-Shur和Ryzhii-Satou-Shur不稳定性的合作促进。

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  • 来源
  • 会议地点 Baltimore MD(US)
  • 作者单位

    Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Kotelnikov Institute of Radio Engineering and Electronics (Saratov Branch), Saratov 410019, Russia,Saratov State University, Saratov 410012, Russia,Saratov Scientic Center of the Russian Academy of Sciences, Saratov 410028, Russia;

    Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

    Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Plasmon; instability; THz emission; graphene;

    机译:等离子不稳定太赫兹发射;石墨烯;

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