Strain selection of charge and orbital ordering patterns in half-doped manganites

TL;DR

This paper investigates how long-range strain interactions influence charge and orbital ordering in half-doped manganites, revealing their role in stabilizing specific magnetic structures relevant to colossal magnetoresistance.

Contribution

It provides theoretical and computational insights into the impact of strain energy on charge and orbital orderings, highlighting the stabilization of the zig-zag chain pattern.

Findings

Strain energy contributes 20-30 meV/Mn.

Long-range strain interactions stabilize zig-zag chain order.

Strain effects are crucial for understanding manganite properties.

Abstract

Theoretical and computational results are presented clarifying the role of long-ranged strain interactions in determining the charge and orbital ordering in colossal magnetoresistance manganites. The strain energy contribution is found to be of order 20-30 meV/Mn and in particular stabilizes the anomalous 'zig-zag chain' order observed in many half-doped manganites.