Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean-field theory

Haverkort MW, Sangiovanni G, Hansmann P, Toschi A, Lu Y, Macke S (2014)

Publication Type: Journal article

Publication year: 2014

Journal

EPL - Europhysics Letters Institute of Physics: EPL

Book Volume: 108

Journal Issue: 5

DOI: 10.1209/0295-5075/108/57004

Abstract

Using a recently developed impurity solver we exemplify how dynamical mean-field theory captures band excitations, resonances, edge singularities and excitons in core level x-ray absorption spectroscopy (XAS) and core level photo electron spectroscopy (cPES) on metals, correlated metals and Mott insulators. Comparing XAS at different values of the core-valence interaction shows how the quasiparticle peak in the absence of core-valence interactions evolves into a resonance of similar shape, but different origin. Whereas XAS is rather insensitive to the metal insulator transition, cPES can be used, due to nonlocal screening, to measure the amount of local charge fluctuation. Copyright (C) EPLA, 2014

Authors with CRIS profile

Philipp Hansmann

Involved external institutions

Max-Planck-Institut für Festkörperforschung DE Germany (DE) Julius-Maximilians-Universität Würzburg DE Germany (DE) École Polytechnique - Université Paris-Saclay FR France (FR) Technische Universität Wien / Vienna University of Technology AT Austria (AT)

How to cite

APA:

Haverkort, M.W., Sangiovanni, G., Hansmann, P., Toschi, A., Lu, Y., & Macke, S. (2014). Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean-field theory. EPL - Europhysics Letters, 108(5). https://dx.doi.org/10.1209/0295-5075/108/57004

MLA:

Haverkort, M. W., et al. "Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean-field theory." EPL - Europhysics Letters 108.5 (2014).

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