Electrophoretic-like gating used to control metal-insulator transitions in electronically phase separated manganite wires

TL;DR

This paper demonstrates controllable, reversible metal-insulator transitions in manganite wires via electrophoretic-like gating, enabling multiple resistive states and robust switching resistant to thermal breakdown.

Contribution

It introduces a novel electrophoretic-like gating technique to control phase-separated manganite wires, revealing multiple resistive states and robust switching behavior.

Findings

Reversible metal-insulator transitions under local electric fields

Multiple discrete resistive states in a single wire

High resistance to thermal breakdown during cycling

Abstract

Electronically phase separated manganite wires are found to exhibit controllable metal-insulator transitions under local electric fields. The switching characteristics are shown to be fully reversible, polarity independent, and highly resistant to thermal breakdown caused by repeated cycling. It is further demonstrated that multiple discrete resistive states can be accessed in a single wire. The results conform to a phenomenological model in which the inherent nanoscale insulating and metallic domains are rearranged through electrophoretic-like processes to open and close percolation channels.