Theory of optical probes of topological insulators

• Applicant: Professor Dr. Felix von Oppen
• Subject Area: Theoretical Condensed Matter Physics
• Term: from 2013 to 2020
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 238027530

Topological insulators are novel states of matter that are characterized by a bulk gap and extended surface states which are topologically protected. Recent experiments aim at probing the surface states by a series of optical probes. This project focuses on the theoretical description of photocurrent generation, which enjoyed significant recent experimental activity - also in the framework of the current priority program - but remains only partially understood theoretically. We aim to elucidate the elementary processes, to understand photocurrents in specific material systems, and to expore possible applications.

• DFG Programme: Priority Programmes
• Subproject of: SPP 1666: Topological Insulators: Materials - Fundamental Properties - Devices