Spin-Charge gauge approach to "Pseudogap": theory versus experiments

TL;DR

This paper presents a spin-charge gauge theory approach to the pseudogap phenomenon in high-temperature superconductors, explaining experimental features through a model that captures the interplay of antiferromagnetism and charge dynamics.

Contribution

It introduces a novel spin-charge gauge framework for the t-J model that explains pseudogap features and matches experimental data.

Findings

Reproduces the metal-insulator crossover behavior.

Shows gauge interactions bind spinons and holons into electron resonances.

Aligns theoretical predictions with experimental resistivity measurements.

Abstract

We propose an explanation of several experimental features related to the ``pseudogap'' in HTS cuprates in terms of a spin-charge gauge theory approach to the t-J model. The metal-insulator crossover as temperature decreases is explained from the competition between antiferromagnetism and dissipative charge dynamics. We show that gauge interactions bind spinon and holon into an electron resonance, whose recombination time shows up in the out-of-plane resistivity. The theoretical results are sistematically compared with experimental data, finding a very good agreement.