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Colossal electroresistance and current induced switching in ferromagnetic insulating state of La0.82Ca0.18MnO3

Jain, Himanshu and Raychaudhuri, AK and Mukovskii, Ya M and Shulyatev, D (2006) Colossal electroresistance and current induced switching in ferromagnetic insulating state of La0.82Ca0.18MnO3. In: Applied Physics Letters, 89 (15). p. 152116.

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Abstract

Colossal electroresistance and current induced resistivity switching have been measured in the ferromagnetic insulating (FMI) state of single crystal manganite La0.82Ca0.18MnO3. The sample has a Curie transition temperature TC = 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 ( ≈ 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
Additional Information: Copyright of this article belongs to American Institute of Physics.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 27 Feb 2012 11:27
Last Modified: 27 Feb 2012 11:27
URI: http://eprints.iisc.ernet.in/id/eprint/42986

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