Terahertz nonlinear transport in twisted graphene and van der Waals heterostructures

Principal investigator

Sergey Ganichev, University of Regensburg, sergey.ganichev(at) ur.de [webpage]

teaser picture


Our long-term aim of the project 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.

High frequency nonlinear transport phenomena will be investigated applying radiation with frequencies from gigahertz to terahertz and intensities varying in a wide range. Various types of excitation give an access to charge/spin properties of 2D materials providing the basis for the development of the microscopic picture of novel phenomena.