Complex order parameter symmetry and thermal conductivity

TL;DR

This paper investigates the thermal properties of superconductors with complex order parameters, revealing distinct behaviors of their components and explaining recent experimental findings on high-temperature superconductors.

Contribution

It provides a numerical analysis of thermal behaviors in complex order parameter superconductors and explains recent experimental results within this theoretical framework.

Findings

Different components of complex order parameters exhibit qualitatively distinct thermal behaviors.

The complex order parameter model explains recent experimental observations on magnetothermal conductivity.

Temperature-dependent gap anisotropy in high-temperature superconductors is naturally explained.

Abstract

Thermal behaviour of superconductors with complex order parameter symmetry is studied within a weak coupling theory. It is shown numerically, that the thermal nature of the different components of complex order parametrs are qualitatively different. Within the complex order parameter scenario, the recent experimental observations by Krishna {\it et al.}, [Science {\bf 277}, 83 (1997)] on magnetothermal conductivity and by J. Ma {\it et al.}, [Science {\bf 267}, 862 (1995)] on temperature dependent gap anisotropy for high temperature superconductors can have natural explanation.