Single-band superconductivity in low density SrTiO<sub>3</sub>

ORAL

Abstract

Bulk strontium titanate is a well-known low density multi-band superconductor. Recently, it was found that superconductivity persists to an order of magnitude lower doping (≤1018 cm-3). Superconductivity in the low density single-band regime is interesting because the nominal Debye energy is comparable to or greater than the Fermi energy, also known as the non-adiabatic limit. We present a study that combines standard magneto-transport, measurements of Shubnikov de Haas oscillations and superconducting properties to better understand superconductivity in the very low density limit in high mobility reduced single crystals of SrTiO3.

*We acknowledge support of the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Materials Sciences and Engineering Division. The use of facilities at the Center for Nanoscale Materials was supported by the U.S. DOE, BES under Contract No. DE-AC02-06CH11357. The National Hig

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Presenters

  • Terence Bretz-Sullivan

    • Argonne Natl Lab

Authors

  • Terence Bretz-Sullivan

    • Argonne Natl Lab

  • J Jiang

    • Argonne National Laboratory
    • Materials Science Division, Argonne National Laboratory
    • Argonne Natl Lab

  • Alexey Suslov

    • NHMFL
    • Natl High Magnetic Field Lab

  • John Pearson

    • Materials Science Division, Argonne National laboratory
    • Materials Science Division, Argonne National Laboratory
    • Argonne National Laboratory
    • Argonne Natl Lab
    • Material Science Division, Argonne National Laboratory

  • Alex Martinson

    • Argonne National Laboratory
    • Argonne Natl Lab

  • Anand Bhattacharya

    • Argonne National Lab
    • Materials Science Division, Argonne National Laboratory
    • Argonne Natl Lab
    • Material Science Division, Argonne National Laboratory
    • ANL