Superconductivity induced by Ag intercalation in Dirac semimetal Bi2Se3
Abstract
Superconductivity in a doped topological insulator (TI) is a very interesting phenomenon and constitute a new finding of the modern day condensed matter physics. Here we have investigated the physical and transport properties of such an intercalated TI, namely, Bi2Se3 via a strong coupling route. The unique bandstructure of Bismuth Selenide with a dirac cone is strongly influenced with the intercalation by Silver (Ag) (Gold (Au) is included to compare and contrast) at high densities, along with novel structural effects, leading to the emergence of orbital selective metal insulator transition with possible superconductivity at low temperature. Here we have explored the part of multi orbital electron electron correlations in Ag and Au intercalated Bi2Se3 via dynamical-mean-field theory with local density approximation, and the impact of this intercalation in establishing new physical properties and possible energy applications.
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