In recent years, the search for non-trivial topological materials has become a hot topic in condensed matter physics. Since Hor et al, first reported the discovery of superconductivity in Cu doped topological material Bi2Se3 in 2010, the CuxBi2Se3 has become one of the most promising materials as topological superconductor due to its unique physical properties and crystal structure. However, the superconducting transition temperature Tc up to 3.8 K in CuxBi2Se3 is unexpectedly “high” for a low carrier density semiconductor. So far, the mechanism of such anomalous enhanced Tc phenomenon remains unclear despite nearly a decade of extensive research.
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Source: Phys.org