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  • Di Marco, IgorUppsala universitet,Materialteori,Uppsala University, Sweden (author)

Electron correlations in MnxGa1-xAs as seen by resonant electron spectroscopy and dynamical mean field theory

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • 2013-10-21
  • Springer Science and Business Media LLC,2013

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:9af9857d-9c4d-4893-8f77-fd3838c1af81
  • https://doi.org/10.1038/ncomms3645DOI
  • https://research.chalmers.se/publication/189512URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-212420URI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-8729URI

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  • Language:English
  • Summary in:English

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  • Subject category:art swepub-publicationtype
  • Subject category:ref swepub-contenttype

Notes

  • After two decades since the discovery of ferromagnetism in manganese-doped gallium arsenide, its origin is still debated, and many doubts are related to the electronic structure. Here we report an experimental and theoretical study of the valence electron spectrum of manganese-doped gallium arsenide. The experimental data are obtained through the differences between off- and on-resonance photo emission data. The theoretical spectrum is calculated by means of a combination of density-functional theory in the local density approximation and dynamical mean field theory, using exact diagonalization as impurity solver. Theory is found to accurately reproduce measured data and illustrates the importance of correlation effects. Our results demonstrate that the manganese states extend over a broad range of energy, including the top of the valence band, and that no impurity band splits-off from the valence band edge, whereas the induced holes seem located primarily around the manganese impurity.

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Added entries (persons, corporate bodies, meetings, titles ...)

  • Thunström, PatrikUppsala universitet,Materialteori,Uppsala University, Sweden / Institute for Solid State Physics, Vienna University of Technology, Austria(Swepub:uu)patth892 (author)
  • Katsnelson, M. I.Radboud Universiteit,Radboud University,Radboud University Nijmegen, The Netherlands (author)
  • Sadowski, J.Polish Academy of Sciences,Lunds universitet,Lund University,Polish Academy of Sciences, Poland / Lund University, Sweden (author)
  • Karlsson, KristerHögskolan i Skövde,Institutionen för vård och natur,Forskningscentrum för Virtuella system,Fysik och matematik, Physics and Mathematics(Swepub:his)karr (author)
  • Lebegue, S.Universite de Lorraine,Institut Jean Barriol, Université de Lorraine, France (author)
  • Kanski, Janusz,1946Chalmers tekniska högskola,Chalmers University of Technology,Chalmers University of Technology, Sweden(Swepub:cth)f1xjk (author)
  • Eriksson, OlleUppsala universitet,Materialteori,Uppsala University, Sweden(Swepub:uu)olleerik (author)
  • Uppsala universitetMaterialteori (creator_code:org_t)

Related titles

  • In:Nature Communications: Springer Science and Business Media LLC4, s. 6-2041-17232041-1723

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