Beyond time constants: Quantifying interactions in correlated materials by complementary ultrafast time-domain approaches

• Applicant: Dr. Laurenz Rettig
• Subject Area: Experimental Condensed Matter Physics
• Term: since 2017
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 329670326

Topic of the Emmy-Noether project “Beyond time constants: Quantifying interactions in correlated materials by complementary ultrafast time-domain approaches” is the investigation and quantification of microscopic coupling processes in complex quantum materials using complementary ultrafast methods. Based on such approaches, e.g. femtosecond time- and angle-resolved photoemission spectroscopy or ultrafast diffraction techniques, the temporal evolution under nonequilibrium conditions of the individual degrees of freedom such as the electrons, spins, lattice vibrations, or electronic orbitals can be individually tracked. Importantly, the comparison of their dynamics provides rich information about their mutual coupling. This continuation proposal for a final year of funding is based on concepts and results of the main project, and extends the original research question by topics such as momentum- and band-dependent electron-phonon coupling, magnetic-field-dependent spin dynamics, or the dynamics in emergent interface states in complex oxide heterostructures.

• DFG Programme: Independent Junior Research Groups