Reversibility of Superconductivity in CuxBi2Se3 via Quenching Conditions

ORAL

Abstract

We investigated the effect of various growth and annealing conditions on Cu$_{0.3}$Bi$_{2}$Se$_{3}$, a compound proposed to host topological superconductivity. For annealing temperature $T > 580^{\circ}$C, quenching was found necessary for superconductivity, and the superconductivity loss due to not quenching after annealing was reversible by further annealing and quenching. For $T < 580^{\circ}$C, annealing was detrimental, even when followed by quenching. Floating zone growth and the annealing of thin ($< 1$ mm) crystals were found to be detrimental to superconductivity.

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Authors

  • John Schneeloch

    Brookheaven National Laboratory, Brookhaven National Laboratory

  • Ruidan Zhong

    Brookheaven National Laboratory, Brookhaven National Laboratory

  • Zhijun Xu

    Brookhaven National Laboratory, CMP\&MS Department, Brookhaven National Laboratory, Brookhaven National Lab

  • Alina Yang

    CMP\&MS Department, Brookhaven National Laboratory, Brookhaven National Laboratory

  • Genda Gu

    Brookhaven National Laboratory, CMP\&MS Department, Brookhaven National Laboratory, Condensed Matter Physics \& Materials Science Department, Brookhaven National Laboratory, Brookhaven National Laboratory, Upton, NY, Brookhaven National Laboratory, Condensed Matter Physics \& Materials Science Department, NY 11973, Brookheaven National Laboratory

  • John Tranquada

    Brookhaven National Laboratory, Brookhaven National Lab, Brookheaven National Laboratory