Finite - temperature quantum phase transition in d - waves superconductors

TL;DR

This paper extends the theory of d-wave superconductor phase transitions from zero temperature to finite temperatures, linking Gaussian behavior to non-Fermi normal states in cuprates.

Contribution

It generalizes the zero-temperature phase transition theory for d-wave superconductors to finite temperatures, providing insights into the normal state's non-Fermi behavior.

Findings

Gaussian behavior correlates with non-Fermi normal state

Theory applicable to two-dimensional cuprate superconductors

Extends previous zero-temperature models

Abstract

The zero temperature d - wave superconductor phase transition theory given in the case of T=0 for two - dimensional superconductors (I. Herbut, PRL {\bf 85}, 1532 (2000)) is generalized for finite temperatures. The Gaussian behavior of the system is associated with a non - Fermi behavior of the normal state observed in the resistivity of cuprate superconductors.