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Theory of L-edge sp...
Theory of L-edge spectroscopy of strongly correlated systems
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- Lüder, Johann (author)
- Uppsala universitet,Materialteori,National University of Singapore, Department of Mechanical Engineering
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- Schött, Johan (author)
- Uppsala universitet,Materialteori
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- Brena, Barbara (author)
- Uppsala universitet,Materialteori
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- Haverkort, Maurits W. (author)
- Institute for Theoretical Physics, Heidelberg University, Heidelberg, Germany
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- Thunström, Patrik, 1981- (author)
- Uppsala universitet,Materialteori
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- Eriksson, Olle, 1960- (author)
- Uppsala universitet,Örebro universitet,Institutionen för naturvetenskap och teknik,Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden,Materialteori,Örebro University, School of Science and Technology
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- Sanyal, Biplab (author)
- Uppsala universitet,Materialteori
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- Di Marco, Igor (author)
- Uppsala universitet,Materialteori
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- Kvashnin, Yaroslav (author)
- Uppsala universitet,Materialteori
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(creator_code:org_t)
- American Physical Society, 2017
- 2017
- English.
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In: Physical Review B. - : American Physical Society. - 2469-9950 .- 2469-9969. ; 96:24
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
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- X-ray absorption spectroscopy measured at the L edge of transition metals (TMs) is a powerful element selective tool providing direct information about the correlation effects in the 3d states. The theoretical modeling of the 2p -> 3d excitation processes remains to be challenging for contemporary ab initio electronic structure techniques, due to strong core-hole and multiplet effects influencing the spectra. In this work, we present a realization of the method combining the density-functional theory with multiplet ligand field theory, proposed in Haverkort et al. [Phys. Rev. B 85, 165113 (2012)]. In this approach, a single-impurity Anderson model (SIAM) is constructed, with almost all parameters obtained from first principles, and then solved to obtain the spectra. In our implementation, we adopt the language of the dynamical mean-field theory and utilize the local density of states and the hybridization function, projected onto TM 3d states, in order to construct the SIAM. The developed computational scheme is applied to calculate the L-edge spectra for several TM monoxides. A very good agreement between the theory and experiment is found for all studied systems. The effect of core-hole relaxation, hybridization discretization, possible extensions of the method as well as its limitations are discussed.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Lüder, Johann
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Schött, Johan
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Brena, Barbara
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Haverkort, Mauri ...
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Thunström, Patri ...
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Eriksson, Olle, ...
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show more...
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Sanyal, Biplab
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Di Marco, Igor
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Kvashnin, Yarosl ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Physical Review ...
- By the university
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Örebro University
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Uppsala University