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Publisher DOI: 10.1140/epjst/e2017-70051-3
Title: Realistic many-body approaches to materials with strong nonlocal correlations
Language: English
Authors: Lechermann, Frank 
Lichtenstein, Alexander I. 
Potthoff, Michael 
Keywords: density functional theory
Issue Date: 10-Jul-2017
Publisher: Springer
Source: European Physical Journal: Special Topics 11 (226): 2591-2613 (2017)
Journal or Series Name: European physical journal special topics 
Abstract (english): Many of the fascinating and unconventional properties of several transition-metal compounds with partially filled d-shells are due to strong electronic correlations. While local correlations are in principle treated exactly within the frame of the dynamical mean-field theory, there are two major and interlinked routes for important further methodical advances: On the one hand, there is a strong need for methods being able to describe material-specific aspects, i.e., methods combining the DMFT with modern band-structure theory, and, on the other hand, nonlocal correlations beyond the mean-field paradigm must be accounted for. Referring to several concrete example systems, we argue why these two routes are worth pursuing and how they can be combined, we describe several related methodical developments and present respective results, and we discuss possible ways to overcome remaining obstacles.
DOI: 10.15480/882.2009
ISSN: 1951-6401
Institute: Keramische Hochleistungswerkstoffe M-9 
Type: (wissenschaftlicher) Artikel
Funded by: Deutsche Forschungsgemeinschaft (DFG)
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
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