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Publication Detail
Electronic nematicity in Sr2RuO4.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Wu J, Nair HP, Bollinger AT, He X, Robinson I, Schreiber NJ, Shen KM, Schlom DG, Bozovic I
  • Publication date:
    19/05/2020
  • Pagination:
    10654, 10659
  • Journal:
    Proceedings of the National Academy of Sciences of the United States of America
  • Volume:
    117
  • Issue:
    20
  • Status:
    Published
  • Print ISSN:
    0027-8424
Abstract
© 2020 National Academy of Sciences. All rights reserved. We have measured the angle-resolved transverse resistivity (ARTR), a sensitive indicator of electronic anisotropy, in high-quality thin films of the unconventional superconductor Sr2RuO4 grown on various substrates. The ARTR signal, heralding the electronic nematicity or a large nematic susceptibility, is present and substantial already at room temperature and grows by an order of magnitude upon cooling down to 4 K. In Sr2RuO4 films deposited on tetragonal substrates the highest-conductivity direction does not coincide with any crystallographic axis. In films deposited on orthorhombic substrates it tends to align with the shorter axis; however, the magnitude of the anisotropy stays the same despite the large lattice distortion. These are strong indications of actual or incipient electronic nematicity in Sr2RuO4
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