Combined Effect of Bond- and Potential-Disorder in Half-Doped Manganites

TL;DR

This paper investigates how bond- and potential-disorder influence phase transitions in half-doped manganites, revealing a new charge-ordered state with spin-glass behavior through real-space Monte Carlo simulations.

Contribution

It introduces a comprehensive analysis of combined disorder effects near a metal-insulator transition in manganites, highlighting a novel charge-ordered phase.

Findings

Discovery of a charge-ordered state coexisting with spin-glass behavior

Contrast of bond- and potential-disorder effects on phase diagrams

Insights into disorder influence on manganite phase transitions

Abstract

We analyze the effects of both bond- and potential-disorder in the vicinity of a first-order metal insulator transition in a two-band model for manganites using a real-space Monte Carlo method. Our results reveal a novel charge-ordered state coexisting with spin-glass behavior. We provide the basis for understanding the phase diagrams of half-doped manganites, and contrast the effects of bond- and potential-disorder and the combination of both.