Microscopic interactions from ultrafast spectroscopies

With the recent progress in ultrafast spectroscopies - time-resolved ARPES in particular - it becomes possible to disentangle degrees of freedom in the real-time domain. The ultimate goal is to be able to "measure" microscopic couplings like electron-electron or electron-phonon interactions. To this end, we use the power of nonequilibrium simulation methods to investigate how one can learn about interacting effects from tailored spectroscopies. A close collaborating with leading experimentalists is a cornerstone of these efforts.

Relevant publications:

1. Coherent Modulation of Quasiparticle Scattering Rates in a Photoexcited Charge-Density-Wave System
   J. Maklar, M. Schüler, Y. W. Windsor, C. W. Nicholson, M. Puppin, P. Walmsley, I. R. Fisher, M. Wolf, R. Ernstorfer, M. A. Sentef, L. Rettig
   arXiv:2108.12323 (2021)

2. Self-energy dynamics and mode-specific phonon threshold effect in a Kekulé-ordered graphene
   H. Zhang, C. Bao, M. Schüler, S. Zhou, Q. Li, L. Luo, W. Yao, Z. Wang, T. P. Devereaux, S. Zhou
   arXiv:2106.01358 (2021) - accepted in National Science Review

3. Ultrafast nonequilibrium evolution of excitonic modes in semiconductors
   Y. Murakami, M. Schüler, S. Takayoshi, P. Werner
   Phys. Rev. B 101, 035203 (2020)

4. Time-dependent many-body treatment of electron-boson dynamics: Application to plasmon-accompanied photoemission
   M. Schüler, J. Berakdar, Y. Pavlyukh
   Phys. Rev. B 93, 054303 (2016)