Local Charged States in La_{0.89}Sr_{0.11}MnO_3 Single Crystals

TL;DR

This paper provides direct evidence of charge segregation in manganite crystals, showing electric-field-induced local charged states with piezoelectric and polar properties that may indicate a new form of polar ordering in solids.

Contribution

It demonstrates the existence and stability of local charged states in La_{0.89}Sr_{0.11}MnO_3, revealing potential new polar phenomena in manganites.

Findings

Charge segregation observed in manganite crystals.

Electric-field-induced charged states are stable over 100 hours.

Induced states exhibit piezoelectric and polar properties.

Abstract

We report the direct evidence of the possibility of charge segregation in manganites. The high contrast of electric-field-induced local charged states is observed during more than 100 hours at room temperature. These induced states display a piezoelectric response and polar properties. This effect may be an example of a new kind of polar ordering in solid state.