Superconductivity in copper intercalated topological compound CuxBi2Te3 induced via high pressure

Copper intercalated Bi2Te3 topological single crystal Cu0.14Bi2Te3 was grown using Bridgman method. The transport properties were studied by temperature dependent resistance measurements at various pressures. Pressure induced superconductivity was found with T-c for ambient phase similar to 6 K. The evolutions of crystal structure with pressure were investigated by high pressure synchrotron radiation experiments that reveal structural transitions occurring above 9.8 GPa. The superconducting properties of Cu0.14Bi2Te3 are compared with that of undoped topological compound Bi2Te3. (C) 2013 Elsevier B.V. All rights reserved.