Colossal electroresistance and current induced switching in ferromagnetic insulating state of $La_{0.82}Ca_{0.18}MnO_3$

Jain, Himanshu and Raychaudhuri, AK (2006) Colossal electroresistance and current induced switching in ferromagnetic insulating state of $La_{0.82}Ca_{0.18}MnO_3$. In: Applied Physics Letters, 89 (15). 152116-1-3.

PDF Colossal_electroresistance.pdf Restricted to Registered users only Download (87kB) | Request a copy

Abstract

Colossal electroresistance and current induced resistivity switching have been measured in the ferromagnetic insulating FMI state of single crystal manganite $La_{0.82}Ca_{0.18}MnO_3$. The sample has a Curie transition temperature $T_C=165 K$ and the FMI state is realized for temperatures T< 100 K. The electroresistance ER, arising from a strong nonlinear resistivity, attains a large value \approx 100% in the FMI state. However, this is accompanied by a collapse of the magnetoresistance MR to a small value even in magnetic field (H) of 10 T. This demonstrates that the mechanisms that give rise to ER and MR are effectively decoupled.

Item Type:	Journal Article
Publication:	Applied Physics Letters
Publisher:	American Institute of Physics
Additional Information:	Copyright of this article belongs to American Institute of Physics.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	23 Nov 2006
Last Modified:	19 Sep 2010 04:32
URI:	http://eprints.iisc.ac.in/id/eprint/8942

Actions (login required)

View Item