Scaling analysis of normal state properties of high-temperature superconductors

TL;DR

This paper introduces a model-independent scaling method to analyze various normal state properties of high-temperature superconductors, revealing a common pseudogap energy scale that aligns with experimental observations and enhances understanding of their electronic structure.

Contribution

A novel scaling approach that unifies the analysis of multiple physical properties of high-Tc superconductors in the normal state, highlighting the role of the pseudogap energy scale.

Findings

All physical quantities analyzed exhibit good scaling behavior.

The pseudogap energy scale explains the doping dependence of properties.

Results agree with angle-resolved photoemission data.

Abstract

We propose a model-independent scaling method to study the physical properties of high-temperature superconductors in the normal state. We have analyze the experimental data of the c-axis resistivity, the in-plane resistivity, the Hall coefficient, the magnetic susceptibility, the spin-lattice relaxation rate, and the thermoelectric power using this method. It is shown that all these physical quantities exhibit good scaling behaviors, controlled purely by the pseudogap energy scale in the normal state. The doping dependence of the pseudogap obtained from this scaling analysis agrees with the experimental results of angle-resolved photoemission and other measurements. It sheds light on the understanding of the basic electronic structure of high-Tc oxides.