Electric Field Controlled Magnetization and Charge-Ordering in Pr0.6Ca0.4MnO3

TL;DR

This study demonstrates that applying a small electric field can effectively control charge-ordering and induce metamagnetic transitions in Pr0.6Ca0.4MnO3, offering a low-voltage alternative to high magnetic fields for manipulating magnetic states.

Contribution

The paper reports the first observation of electric field-induced melting of charge ordering and control of magnetic transitions in Pr0.6Ca0.4MnO3 single crystals.

Findings

Electric field can melt charge ordering at 2.5 V.

Magnetization changes significantly across TCO with applied voltage.

Electric field influences metamagnetic transitions at low temperatures.

Abstract

In this paper, we present the observation of the electric field control on the charge-ordering and metamagnetic transitions during the magnetization measurements in a single crystal of Pr0.6Ca0.4MnO3 (PCMO). We have demonstrated that the complete melting of charge ordering can be realized in a single crystal of PCMO by applying a voltage as small as 2.5 V, which otherwise needs magnetic fields in excess of 11 T. The maximum change in magnetization with applied voltage occurs across the charge-ordering transition temperature (TCO = 235 K). Even though the electric field does not seem to affect the magnetic ordering, we see a clear evidence at low temperatures for the occurrence of the metamagnetic transitions at higher fields with the application of electric field.