Author/Authors :
He، نويسنده , , H.T. and Wang، نويسنده , , G. and Liu، نويسنده , , H.C. and Zhang، نويسنده , , T. and Law، نويسنده , , K.T. and Sou، نويسنده , , I.K. and Wang، نويسنده , , J.N.، نويسنده ,
Abstract :
Superconductivity is realized in Fe1+xTe (x=0.1–0.2) thin films grown on topological insulator Bi2Te3 by molecular beam epitaxy. A thorough analysis of the obtained transport data in terms of the vortex glass theory reveals the occurrence of a spontaneous vortex glass phase transition in the superconducting Fe1+xTe films. Such a phase transition is ascribed to the presence of excess Fe in Fe1+xTe, indicating the important role of excess Fe in the vortex dynamics of iron chalcogenide. Based on the transport data, a phase diagram of Fe1+xTe is also constructed.
