Evolution of the Hall Coefficient and the Peculiar Electronic Structure of the Cuprate Superconductors

TL;DR

This paper investigates the unusual behavior of the Hall coefficient in cuprate superconductors, revealing its evolution reflects a two-component electronic structure linked to Fermi surface development, advancing understanding of their complex electronic properties.

Contribution

The study provides a systematic analysis of the Hall coefficient in La_{2-x}Sr_{x}CuO_{4} across doping levels, connecting its peculiar evolution to a two-component electronic structure.

Findings

Hall coefficient exhibits unusual doping dependence

Electronic structure develops a two-component nature

Fermi surface evolution correlates with transport properties

Abstract

Although the Hall coefficient R_H is an informative transport property of metals and semiconductors, its meaning in the cuprate superconductors has been ambiguous because of its unusual characteristics. Here we show that a systematic study of R_H in La_{2-x}Sr_{x}CuO_{4} single crystals over a wide doping range establishes a qualitative understanding of its peculiar evolution, which turns out to reflect a two-component nature of the electronic structure caused by an unusual development of the Fermi surface recently uncovered by photoemission experiments.