Electrical transport and glassy response in strained thin La0.7Ca0.3MnO3 films

TL;DR

This study investigates the magnetotransport and glassy behavior of strained La0.7Ca0.3MnO3 thin films, revealing significant resistance changes under electric current and complex phase interactions.

Contribution

It provides new insights into the interplay of charge, spin, and strain in strained manganite thin films, highlighting their glassy and transport properties.

Findings

Resistance decreases with electric current over 10-220 K

Glassy features include hysteresis and memory effects

Charge, spin, and strain interactions influence magnetotransport

Abstract

Magnetotransport properties of La0.7Ca0.3MnO3 thin films deposited on (100) LaAlO3 substrate were investigated. The balance between the charge ordered insulating phase and ferromagnetic metallic phase may account for a number of glassy features such as: significant hysteresis, memory effects and long-time resistivity relaxation. It was found that the resistance of La0.7Ca0.3MnO3 thin film decreases significantly upon applying electric current, in a wide temperature range 10 - 220 K. The magnetotransport properties of the strained thin films are discussed in the context of cross-coupling of charge, spin and strain.