Nonequilibrium resonant inelastic x-ray scattering study of an electron-phonon model
Werner P, Eckstein M (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 104
Article Number: 085155
Journal Issue: 8
DOI: 10.1103/PhysRevB.104.085155
Abstract
We use the nonequilibrium dynamical mean-field theory formalism to compute the equilibrium and nonequilibrium resonant inelastic x-ray scattering (RIXS) signal of a strongly interacting fermionic lattice model with a coupling of dispersionless phonons to the total charge on a given site. In the atomic limit, this model produces phonon subbands in the spectral function, but not in the RIXS signal. Electron hopping processes however result in phonon-related modifications of the charge excitation peak. We discuss the equilibrium RIXS spectra and the characteristic features of nonequilibrium states induced by photo-doping and by the application of a static electric field. The latter produces features related to Wannier-Stark states, which are dressed with phonon sidebands. Thanks to the effect of field-induced localization, the phonon features can be clearly resolved even in systems with weak electron-phonon coupling.
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APA:
Werner, P., & Eckstein, M. (2021). Nonequilibrium resonant inelastic x-ray scattering study of an electron-phonon model. Physical Review B, 104(8). https://doi.org/10.1103/PhysRevB.104.085155
MLA:
Werner, Philipp, and Martin Eckstein. "Nonequilibrium resonant inelastic x-ray scattering study of an electron-phonon model." Physical Review B 104.8 (2021).
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