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Entanglement and manipulation of the magnetic and spin–orbit order in multiferroic Rashba semiconductors

Author

Listed:
  • J. Krempaský

    (Swiss Light Source, Paul Scherrer Institut)

  • S. Muff

    (Swiss Light Source, Paul Scherrer Institut
    Institute of Physics, École Polytechnique Fédérale de Lausanne)

  • F. Bisti

    (Swiss Light Source, Paul Scherrer Institut)

  • M. Fanciulli

    (Swiss Light Source, Paul Scherrer Institut
    Institute of Physics, École Polytechnique Fédérale de Lausanne)

  • H. Volfová

    (Ludwig Maximillian University)

  • A. P. Weber

    (Swiss Light Source, Paul Scherrer Institut
    Institute of Physics, École Polytechnique Fédérale de Lausanne)

  • N. Pilet

    (Swiss Light Source, Paul Scherrer Institut)

  • P. Warnicke

    (Swiss Light Source, Paul Scherrer Institut)

  • H. Ebert

    (Ludwig Maximillian University)

  • J. Braun

    (Ludwig Maximillian University)

  • F. Bertran

    (SOLEIL Synchrotron, L’Orme des Merisiers)

  • V. V. Volobuev

    (National Technical University, Kharkiv Polytechnic Institute
    Institut für Halbleiter-und Festkörperphysik, Johannes Kepler Universität)

  • J. Minár

    (Ludwig Maximillian University
    New Technologies-Research Center University of West Bohemia)

  • G. Springholz

    (Institut für Halbleiter-und Festkörperphysik, Johannes Kepler Universität)

  • J. H. Dil

    (Swiss Light Source, Paul Scherrer Institut
    Institute of Physics, École Polytechnique Fédérale de Lausanne)

  • V. N. Strocov

    (Swiss Light Source, Paul Scherrer Institut)

Abstract

Entanglement of the spin–orbit and magnetic order in multiferroic materials bears a strong potential for engineering novel electronic and spintronic devices. Here, we explore the electron and spin structure of ferroelectric α-GeTe thin films doped with ferromagnetic Mn impurities to achieve its multiferroic functionality. We use bulk-sensitive soft-X-ray angle-resolved photoemission spectroscopy (SX-ARPES) to follow hybridization of the GeTe valence band with the Mn dopants. We observe a gradual opening of the Zeeman gap in the bulk Rashba bands around the Dirac point with increase of the Mn concentration, indicative of the ferromagnetic order, at persistent Rashba splitting. Furthermore, subtle details regarding the spin–orbit and magnetic order entanglement are deduced from spin-resolved ARPES measurements. We identify antiparallel orientation of the ferroelectric and ferromagnetic polarization, and altering of the Rashba-type spin helicity by magnetic switching. Our experimental results are supported by first-principles calculations of the electron and spin structure.

Suggested Citation

  • J. Krempaský & S. Muff & F. Bisti & M. Fanciulli & H. Volfová & A. P. Weber & N. Pilet & P. Warnicke & H. Ebert & J. Braun & F. Bertran & V. V. Volobuev & J. Minár & G. Springholz & J. H. Dil & V. N. , 2016. "Entanglement and manipulation of the magnetic and spin–orbit order in multiferroic Rashba semiconductors," Nature Communications, Nature, vol. 7(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13071
    DOI: 10.1038/ncomms13071
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    Cited by:

    1. Juraj Krempaský & Gunther Springholz & Sunil Wilfred D’Souza & Ondřej Caha & Martin Gmitra & Andreas Ney & C. A. F. Vaz & Cinthia Piamonteze & Mauro Fanciulli & Dominik Kriegner & Jonas A. Krieger & T, 2023. "Efficient magnetic switching in a correlated spin glass," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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