Effective increase of a superconducting critical temperature in a high-entropy electron mixture

TL;DR

This paper theoretically demonstrates that the superconducting critical temperature can be significantly increased by using a high-entropy electron mixture and a metallic trap to manipulate quasiparticle excitations, affecting the superconductor's phase dynamics.

Contribution

It introduces a novel approach to enhance superconducting critical temperature through high-entropy electron mixtures and quasiparticle management.

Findings

Superconducting critical temperature can be increased via entropy of mixing.

Using a metallic trap reduces quasiparticle excitations, influencing phase dynamics.

The approach effectively modifies the Ginzburg-Landau functional to raise T_c.

Abstract

We show theoretically that a superconducting critical temperature can be effectively increased in a high-entropy mixture of electrons belonging to conduction and valence bands. In order to employ the entropy of mixing into the superconducting phase dynamics, we suggest to use a metallic trap that removes quasiparticle excitations from the superconductor. This makes the concentration of Cooper pairs a dynamic variable of the entropy of mixing, and thus affects the Ginzburg-Landau functional of the superconductor effectively reducing the first expansion coefficient or, in other words, increasing the critical temperature.