Holographic superconductor in a deformed four-dimensional STU model

TL;DR

This paper investigates holographic superconductors within a deformed four-dimensional STU model, revealing how magnetic monopoles influence maximum conductivities and thermal properties through the AdS/CFT framework.

Contribution

It introduces a novel analysis of magnetic monopoles' role in holographic superconductivity in a deformed STU model, linking magnetic charge to superconducting maxima.

Findings

Magnetic charge is essential for maximum conductivities.

Presence of magnetic monopole with critical charge enhances superconductivity.

Thermal conductivity increases with magnetic charge.

Abstract

In this paper, we consider deformed STU model in four dimensions including both electric and magnetic charges. Using AdS/CFT correspondence, we study holographic superconductor and obtain transport properties like electrical and thermal conductivities. We obtain transport properties in terms of the black hole magnetic charge and interpret it as magnetic monopole of dual field theory. We find that presence of magnetic charge is necessary to have maximum conductivities, and existence of magnetic monopole with a critical charge (137 e) to reach the maximum superconductivity is important. Also, we show that thermal conductivity increases with increasing of magnetic charge. It may be concluded that the origin of superconductivity is magnetic monopole.