Order of Degrees of Freedom in Underdoped Manganites

TL;DR

This paper investigates how spin, charge, and orbital degrees of freedom evolve in underdoped manganites using a degenerate double exchange model, revealing their interplay and impact on the electronic structure.

Contribution

It introduces a detailed analysis of the ordered states and band structure variations in La_{1-x}Ca_{x}MnO_{3} within a specific doping range, using a comprehensive Hamiltonian approach.

Findings

Variation of degrees of freedom with doping

Band structure dependence on ordered configurations

Insights into electronic properties of underdoped manganites

Abstract

Using the degenerate double exchange Hamiltonian with on-site Coulomb interactions we show how the spin, charge, and orbital state degrees of freedom vary in La_{1-x}Ca_{x}MnO_{3} for dopings in between x=4 and x=5. With the ordered configuration of the system we investigate the band structure for different values of the doping.