Eckstein M (2021)
Publication Type: Journal article
Publication year: 2021
Book Volume: 253
DOI: 10.1016/j.elspec.2021.147108
Time- and angular-resolved photoemission spectroscopy (trARPES) can directly probe the electronic structure of quantum materials out of equilibrium. This can shed light on the interaction of the electrons with spin, lattice, and orbital degrees of freedom, and help to unravel pathways towards novel out-of-equilibrium phases. Dynamical mean-field theory (DMFT) and its extensions provide a versatile toolbox to interpret such experiments through a theoretical simulation of the underlying microscopic processes. The approach can be applied both to Mott insulators and correlated metals, and it is formulated in terms of non-equilibrium Green's functions, which directly relate to the photoemission spectrum. This article reviews the theoretical description of trARPES within DMFT and related diagrammatic non-equilibrium Green's function techniques. Several applications are discussed, including the photo-induced melting of excitonic order, femtosecond relaxation processes in Mott insulators, and the manipulation of the electronic structure of Mott and charge transfer insulators using photodoping and strong THz fields.
APA:
Eckstein, M. (2021). Time-resolved photoemission spectroscopy on correlated electrons: Insights from dynamical mean-field theory. Journal of Electron Spectroscopy and Related Phenomena, 253. https://dx.doi.org/10.1016/j.elspec.2021.147108
MLA:
Eckstein, Martin. "Time-resolved photoemission spectroscopy on correlated electrons: Insights from dynamical mean-field theory." Journal of Electron Spectroscopy and Related Phenomena 253 (2021).
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