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  • Horio, M.University of Tokyo, Japan,Universität Zürich,University of Zürich (author)

Orbital-selective metal skin induced by alkali-metal-dosing Mott-insulating Ca 2 RuO 4

  • Article/chapterEnglish2023

Publisher, publication year, extent ...

  • 2023
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:research.chalmers.se:067f4407-0a26-4de1-b365-a695de92d579
  • https://research.chalmers.se/publication/538334URI
  • https://doi.org/10.1038/s42005-023-01436-1DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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

Notes

  • Doped Mott insulators are the starting point for interesting physics such as high temperature superconductivity and quantum spin liquids. For multi-band Mott insulators, orbital selective ground states have been envisioned. However, orbital selective metals and Mott insulators have been difficult to realize experimentally. Here we demonstrate by photoemission spectroscopy how Ca2RuO4, upon alkali-metal surface doping, develops a single-band metal skin. Our dynamical mean field theory calculations reveal that homogeneous electron doping of Ca2RuO4 results in a multi-band metal. All together, our results provide evidence for an orbital-selective Mott insulator breakdown, which is unachievable via simple electron doping. Supported by a cluster model and cluster perturbation theory calculations, we demonstrate a type of skin metal-insulator transition induced by surface dopants that orbital-selectively hybridize with the bulk Mott state and in turn produce coherent in-gap states.

Subject headings and genre

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

  • Forte, FilomenaUniversita degli Studi di Salerno,University of Salerno,SPIN CNR Institute - Salerno (author)
  • Sutter, D.Universität Zürich,University of Zürich (author)
  • Kim, MinjaeUniversité Paris-Saclay,University Paris-Saclay,Collège de France,Korea Institute for Advanced Study (author)
  • Fatuzzo, C. G.Universität Zürich,University of Zürich (author)
  • Matt, C. E.Universität Zürich,University of Zürich (author)
  • Moser, SimonLawrence Berkeley National Laboratory,Julius-Maximilians Universität Würzburg,University of Würzburg (author)
  • Wada, TetsuyaUniversity of Tokyo, Japan (author)
  • Granata, VeronicaUniversita degli Studi di Salerno,University of Salerno (author)
  • Fittipaldi, R.Universita degli Studi di Salerno,University of Salerno,SPIN CNR Institute - Salerno (author)
  • Sassa, Yasmine,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)sassa (author)
  • Gatti, GianmarcoUniversité de Genève,University of Geneva,Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Rønnow, H. M.Ecole Polytechnique Federale de Lausanne (EPFL),Swiss Federal Institute of Technology in Lausanne (EPFL) (author)
  • Hoesch, M.Diamond Light Source,Deutsches Elektronen-Synchrotron (DESY) (author)
  • Kim, Timur K.Diamond Light Source (author)
  • Jozwiak, ChrisLawrence Berkeley National Laboratory (author)
  • Bostwick, AaronLawrence Berkeley National Laboratory (author)
  • Rotenberg, E.Lawrence Berkeley National Laboratory (author)
  • Matsuda, IwaoUniversity of Tokyo, Japan (author)
  • Georges, A.Université de Genève,University of Geneva,Université Paris-Saclay,University Paris-Saclay,Collège de France,Flatiron Institute (author)
  • Sangiovanni, GiorgioJulius-Maximilians Universität Würzburg,University of Würzburg (author)
  • Vecchione, A.SPIN CNR Institute - Salerno,Universita degli Studi di Salerno,University of Salerno (author)
  • Cuoco, M.Universita degli Studi di Salerno,University of Salerno,SPIN CNR Institute - Salerno (author)
  • Chang, J.Universität Zürich,University of Zürich (author)
  • University of Tokyo, JapanUniversität Zürich (creator_code:org_t)

Related titles

  • In:Communications Physics6:12399-3650

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