Terahertz spectroscopy of Dirac Fermion systems (A04)

• Subject Area: Experimental Condensed Matter Physics
• Term: since 2017
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 314695032

The aim of the project is to explore optoelectronic phenomena induced by THz radiation in graphene and topological insulators. We plan to study THz-induced resistance magneto-oscillations, X2-peak and Hall field-induced resistance oscillations, all recently observed by our group. Furthermore, we plan to observe time-reversal-symmetry preserving Hall effects in Dirac Fermion systems including the dynamic Hall effect and nonlinear Hall effect controlled by the non-trivial Berry phase. As a result, we expect to obtain insights into the underlying microscopic mechanisms of THz fields induced phenomena as well as to gain basic information on spin/charge THz transport in these materials.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1277: Emergent Relativistic Effects in Condensed Matter: From Fundamental Aspects to Electronic Functionality
• Applicant Institution: Universität Regensburg
• Project Head: Professor Dr. Sergey Ganichev