Terahertz nonlinear transport in twisted graphene and van der Waals heterostructures

扭曲石墨烯和范德华异质结构中的太赫兹非线性传输

• 批准号: 443274073
• 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: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/443274073?language=en
• 关键词: Terahertz; nonlinear; transport; twisted; graphene

Our long-term aim is to explore the high frequency electron transport induced by terahertz/infrared radiation in twisted graphene and van der Waals heterostructures, which should uncover novel physical phenomena and open up opportunities to study the charge and spin transport in these materials. Our investigations focus on the following major objectives: dynamic Hall effect and photogalvanic effects driven by polarized THz radiation in twisted graphene layers as well as spin-galvanic effect and generation of spin currents in graphene / 2D magnet structures. In addition, we plan to study similar phenomena in TMDC-based van der Waals heterostructures. As a result, we should get insight into the underlying microscopic mechanisms of THz field induced phenomena, develop corresponding microscopic and phenomenological theories, obtain basic information on spin and charge responses in these materials. By this we provide feedback for the technological groups, and suggest methods for manipulating the spin properties of graphene (TMDC) / 2D magnet structures. Our investigations should provide a scientific basis for novel terahertz/microwave devices.

我们的长期目标是探索扭曲石墨烯和范德华异质结构中太赫兹/红外辐射引起的高频电子传输，这将揭示新的物理现象并为研究这些材料中的电荷和自旋传输提供机会。我们的研究重点关注以下主要目标：扭曲石墨烯层中由偏振太赫兹辐射驱动的动态霍尔效应和光电效应，以及石墨烯/二维磁体结构中的自旋电流效应和自旋电流的产生。此外，我们计划研究基于 TMDC 的范德华异质结构中的类似现象。因此，我们应该深入了解太赫兹场诱发现象的微观机制，发展相应的微观和唯象理论，获得这些材料中自旋和电荷响应的基本信息。通过此，我们为技术小组提供反馈，并提出操纵石墨烯（TMDC）/2D 磁体结构自旋特性的方法。我们的研究应该为新型太赫兹/微波设备提供科学基础。