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.
*J. S., Z. X., and R. Z. are supported by the Center for Emergent Superconductivity, an Energy Frontier Research Consortium supported by the Office of Basic Energy Science of the Department of Energy.
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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
