Nature Communications (Aug 2022)

Superfluid stiffness of a KTaO3-based two-dimensional electron gas

  • S. Mallik,
  • G. C. Ménard,
  • G. Saïz,
  • H. Witt,
  • J. Lesueur,
  • A. Gloter,
  • L. Benfatto,
  • M. Bibes,
  • N. Bergeal

DOI
https://doi.org/10.1038/s41467-022-32242-y
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 8

Abstract

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Heterostructures based on (111)-oriented KTaO3crystals are a new platform for studying oxide interfaces. Gate-tunable superconductivity in 2D electron gases at the surface of (111)-oriented KTaO3is now reported, with the superconducting transition being of the Berezinskii-Kosterlitz-Thouless type.