Terahertz induced quantum transport in nanostructures

太赫兹诱导纳米结构中的量子传输

• 批准号: 333849811
• 负责人: Professor Dr. Sergey Ganichev
• 金额: --
• 依托单位: Institut für Experimentelle und Angewandte Physik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/333849811?language=en
• 关键词: Terahertz; induced; quantum; transport; nanostructures

The focus of the project lies on the exploration of electrical transport phenomena which occur in (nanopatterned) low-dimensional semiconductor (GaAs- SiGe-, and InAs-based quantum wells) and topological insulator systems (HgTe based) under terahertz irradiation. Phenomena to be investigated, both experimentally and theoretically, include terahertz induced magnetoresistance oscillations (TIROs), and polarization dependent giant photocurrents at cyclotron resonance,. A theory of the above effects should be developed in the framework of cooperation with colleagues from Ioffe institute. A prominent role in these investigations play terahertz induced magnetoresistance oscillations, i.e. 1/B periodic oscillations of the conductivity which occur under the influence of terahertz radiation. These oscillations are similar to the well-known microwave induced magnetoresistance oscillations (MIROs) but show, amongst others, unexpected polarization and frequency dependence which challenges the present understanding of the effect. The overall aim of the project is to investigate and clarify the underlying mechanisms of these oscillations and of related terahertz induced transport phenomena.

该项目的重点在于探索太赫兹辐射下（纳米图案）低维半导体（GaAs-SiGe 和 InAs 基量子阱）和拓扑绝缘体系统（HgTe 基）中发生的电输运现象。实验和理论上需要研究的现象包括太赫兹感应磁阻振荡（TIRO）和回旋加速器共振时的偏振相关巨光电流。应在与 Ioffe 研究所同事合作的框架内发展上述效应的理论。在这些研究中，太赫兹感应磁阻振荡发挥着重要作用，即在太赫兹辐射的影响下发生的电导率的 1/B 周期性振荡。这些振荡类似于众所周知的微波感应磁阻振荡（MIRO），但除其他外，显示出意想不到的极化和频率依赖性，这挑战了目前对该效应的理解。该项目的总体目标是研究和阐明这些振荡和相关太赫兹引起的传输现象的根本机制。

项目成果

Microwave response of interacting oxide two-dimensional electron systems

相互作用的氧化物二维电子系统的微波响应

• DOI: 10.1103/physrevb.102.115432
• 发表时间: 2020
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: D. Tabrea;I. A. Dmitriev;S. I. Dorozhkin;B. P. Gorshunov;A. V. Boris;Y. Kozuka;A. Tsukazaki;M. Kawasaki;K. von Klitzing;J. Falson
• 通讯作者: J. Falson

High harmonics of the cyclotron resonance in microwave transmission of a high-mobility two-dimensional electron system

高迁移率二维电子系统微波传输中回旋共振的高次谐波

• DOI: 10.1103/physrevresearch.3.l012013
• 发表时间: 2021
• 作者: M. L. Savchenko;A. Shuvaev;I. A. Dmitriev;A. A. Bykov;A. K. Bakarov;Z. D. Kvon;A. Pimenov
• 通讯作者: A. Pimenov

Observation of terahertz-induced magnetooscillations in graphene.

石墨烯中太赫兹引起的磁振荡的观察

• DOI: 10.1021/acs.nanolett.0c01918
• 发表时间: 2020
• 期刊: Nano letters
• 影响因子: 10.8
• 作者: E. Mönch;D. A. Bandurin;I. A. Dmitriev;I.Y. Phinney;I. Yahniuk;T. Taniguchi;K. Watanabe;P. Jarillo-Herrero;S. D. Ganichev
• 通讯作者: S. D. Ganichev