Nonequilibrium-DMFT based RIXS investigation of the two-orbital Hubbard model

Werner P, Johnston S, Eckstein M (2021)

Publication Type: Journal article

Publication year: 2021

Journal

EPL - Europhysics Letters Institute of Physics: EPL

Book Volume: 133

Journal Issue: 5

DOI: 10.1209/0295-5075/133/57005

Abstract

Resonant inelastic X-ray scattering (RIXS) detects various types of high- and low-energy elementary excitations in correlated solids, and this tool will play an increasingly important role in investigations of time-dependent phenomena in photo-excited systems. While theoretical frameworks for the computation of equilibrium RIXS spectra are well established, the development of appropriate methods for nonequilibrium simulations is an active research field. Here, we apply a recently developed nonequilibrium dynamical mean field theory (DMFT) based approach to compute the RIXS response of photo-excited two-orbital Mott insulators. The results demonstrate the feasibility of multi-orbital nonequilibrium RIXS calculations and the sensitivity of the quasi-elastic fluorescence-like features and d-d excitation peaks on the nonequilibrium population of the Hubbard bands.

Authors with CRIS profile

Martin Eckstein Lehrstuhl für Theoretische Festkörperphysik

Involved external institutions

University of Fribourg / Universitè de Fribourg CH Switzerland (CH) University of Tennessee (UTK) US United States (USA) (US)

How to cite

APA:

Werner, P., Johnston, S., & Eckstein, M. (2021). Nonequilibrium-DMFT based RIXS investigation of the two-orbital Hubbard model. EPL - Europhysics Letters, 133(5). https://doi.org/10.1209/0295-5075/133/57005

MLA:

Werner, Philipp, Steven Johnston, and Martin Eckstein. "Nonequilibrium-DMFT based RIXS investigation of the two-orbital Hubbard model." EPL - Europhysics Letters 133.5 (2021).

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