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

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, 108(5): 57004, pp. 1-6. doi:10.1209/0295-5075/108/57004.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9FF5-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9FF6-8
Genre: Journal Article

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 Creators:
Haverkort, M. W.1, Author              
Sangiovanni, G.2, Author
Hansmann, P.2, Author
Toschi, A.2, Author
Lu, Y.2, Author
Macke, S.2, Author
Affiliations:
1Maurits Haverkort, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863455              
2External Organizations, ou_persistent22              

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 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

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Language(s): eng - English
 Dates: 2014-12-052014-12-15
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
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Title: EPL
  Other : Europhysics Letters
Source Genre: Journal
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Publ. Info: Bristol : IoPP
Pages: - Volume / Issue: 108 (5) Sequence Number: 57004 Start / End Page: 1 - 6 Identifier: Other: 0295-5075
CoNE: /journals/resource/0295-5075