Eur. Phys. J. C (2016) 76: 575
https://doi.org/10.1140/epjc/s10052-016-4441-x

Regular Article - Theoretical Physics

Effects of backreaction on power-Maxwell holographic superconductors in Gauss–Bonnet gravity

¹ Physics Department and Biruni Observatory, College of Sciences, Shiraz University, Shiraz, 71454, Iran
² Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), P.O. Box 55134-441, Maragha, Iran

^* e-mail: asheykhi@shirazu.ac.ir

Received: 2 August 2016
Accepted: 14 October 2016
Published online: 25 October 2016

Abstract

We analytically and numerically investigate the properties of s-wave holographic superconductors by considering the effects of scalar and gauge fields on the background geometry in five-dimensional Einstein–Gauss–Bonnet gravity. We assume the gauge field to be in the form of the power-Maxwell nonlinear electrodynamics. We employ the Sturm–Liouville eigenvalue problem for analytical calculation of the critical temperature and the shooting method for the numerical investigation. Our numerical and analytical results indicate that higher curvature corrections affect condensation of the holographic superconductors with backreaction. We observe that the backreaction can decrease the critical temperature of the holographic superconductors, while the power-Maxwell electrodynamics and Gauss–Bonnet coefficient term may increase the critical temperature of the holographic superconductors. We find that the critical exponent has the mean-field value , regardless of the values of Gauss–Bonnet coefficient, backreaction and power-Maxwell parameters.