Gauge approach to superfluid density in underdoped cuprates

TL;DR

This paper demonstrates that a gauge theoretical approach effectively models the superfluid density in underdoped cuprates, capturing key experimental features such as critical behavior and universal relations.

Contribution

It introduces a gauge approach with a composite hole structure that analytically explains superfluid density phenomena in underdoped cuprates.

Findings

Reproduces critical exponent and Uemura relation

Shows near universality of normalized superfluid density

Matches experimental data in moderate-underdoping to near-optimal doping

Abstract

We prove that a gauge approach based on a composite structure of the hole in hole-doped cuprates is able to capture analytically many features of the experimental data on superfluid density in the moderate-underdoping to nearly-optimal doping region, including critical exponent, the Uemura relation and near universality of the normalized superfluid density.