# Gauss-Bonnet holographic superconductors in exponential nonlinear electrodynamics

## TL;DR

This paper explores how higher-order curvature and nonlinear electrodynamics corrections, inspired by string theory, influence the properties of holographic superconductors in higher-dimensional Einstein-Gauss-Bonnet gravity, revealing effects on critical temperature, condensation, and conductivity.

## Contribution

It investigates the combined effects of Gauss-Bonnet gravity and exponential nonlinear electrodynamics on holographic superconductor properties in various dimensions, using the Sturm-Liouville method.

## Key findings

- Critical temperature decreases with increasing GB and nonlinear parameters.
- Condensation value increases with GB parameter, nonlinear parameter, and spacetime dimension.
- Optical conductivity and energy gap are affected by GB and nonlinear electrodynamics.

## Abstract

The low-energy limits of the string theory lead to the higher-order curvature corrections for Einstein gravity. Also, they give the higher-order derivative corrections for the Maxwell or linear electrodynamics, which suggests the nonlinear electrodynamics. Inspired by this, in this paper we investigate $d$-dimensional holographic superconductors in the probe limit in the framework of Einstein-Gauss-Bonnet gravity and exponential nonlinear electrodynamics. Based on the Sturm-Liouville eigenvalue method, we compute the critical temperature, the condensation value, and the critical exponent. It is observed that the critical temperature decreases when the Gauss-Bonnet (GB) parameter or the nonlinear parameter increases, but it increases with the higher dimension of the spacetime at the efficiently low charge density. In addition, we found that the condensation value becomes larger as increasing the GB parameter, the nonlinear parameter as well as the spacetime dimension. Finally, we calculate the optical conductivity and study the effects of the GB term and exponential nonlinear electrodynamics on superconducting energy gap.