Time-Resolved Nonlinear Optical Spectroscopy at Semiconductor Interfaces (B05)

• Subject Area: Experimental Condensed Matter Physics
• Term: from 2013 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 223848855

Optical second-harmonic generation and coherent phonon spectroscopy are employed to obtain interface-specific information about electronic structure, vibrational excitations and the dynamics of charge-transfer processes at internal semiconductor interfaces. Model systems are buried interfaces of III-V semiconductors, such as GaP/Si, AlAs/GaAs and GaInAs/GaNAs, as well as heterostructures of two-dimensional transition metal dichalcogenides and other van der Waals materials. In particular, we will investigate optical interface phonons and dynamical interfacial processes induced by strong optical or THz excitation.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1083: Structure and Dynamics of Internal Interfaces
• Applicant Institution: Philipps-Universität Marburg
• Project Heads: Professor Dr. Ulrich Höfer, until 6/2021; Dr. Gerson Mette, until 9/2021; Professorin Dr. Kerstin Volz, since 10/2021