Quantum interference effect in strongly localized system of polymer-nanocomposites

Shekhar, S and Prasad, V and Subramanyam, SV (2007) Quantum interference effect in strongly localized system of polymer-nanocomposites. In: Physics Letters A, 371 (5-6). pp. 486-489.

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Abstract

A positive magnetoresistance (MR) is observed in the composites of magnetic nanoparticles and polymer at low temperatures. The MR decreases gradually as temperature increases and becomes negative passing through a crossover temperature regime. The MR attains minimum at 40 K and increases above this temperature. The transport and magnetotransport properties at low temperatures follow Efros–Shklovskii variable range hopping. The negative magnetoresistance has been explained by the quantum interference effect in strongly localized regime.

Item Type:	Journal Article
Publication:	Physics Letters A
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	Nanocomposites;Negative magnetoresistance;Variable range hopping.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	26 Feb 2008
Last Modified:	19 Sep 2010 04:42
URI:	http://eprints.iisc.ac.in/id/eprint/13089

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