Unconventional superconductivity in CuxBi2Se3

Details Unconventional superconductivity in CuxBi2Se3 Unconventional superconductivity in CuxBi2Se3

2011-11-24

arxiv.org/abs/1111.5805v1

Physics

Condensed Matter

Superconductivity

Scientific paper

We report point-contact measurements in high quality single crystals of Cu0.2Bi2Se3. We find a Zero Bias Conductance Peak (ZBCP) in the tunneling data signifying unconventional superconductivity in this compound. The sizes of the gaps as extracted from tunneling and Andreev-reflection data are different and show different temperature and magnetic-field dependence. The temperature dependence of the tunneling data suggests the existence of a pseudo-gap above Tc.

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