Holographic superconductivity above Tc

Abstract

The study of holographic superconductors is an attempt to produce a phenomenological description of unconventional superconductivity by applying the Anti-de Sitter/Conformal Field Theory (AdS/CFT) correspondence to strongly coupled condensed matter systems. In this paper, we observe how a superfluid system with a temperature just above T_c behaves when its vector potential is periodically driven in the AdS radial direction. Under certain parameter regimes, a holographic superconductor can be induced; its condensate order parameter oscillating with a period equal to that of the driving, which is a nontrivial behavior at T > T_c. These results could hopefully be extended to charged, bona-fide superconductors in the boundary of the AdS space.