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American Physical Society, Physical Review Letters, 19(88), 2002

DOI: 10.1103/physrevlett.88.197203

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Colossal Magnetoresistance is a Griffiths Singularity

Journal article published in 2002 by M. B. Salamon, P. Lin, S. H. Chun ORCID
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This paper is available in a repository.

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Abstract

Acceptance of the colossal magnetoresistance (CMR) as type of percolation in which, due to the double-exchange process, bonds become metallic as neighbouring spins tend to align was presented. The magnetic transition in doped manganites were viewed in the context of the Griffiths phase which arosed when disorder suppresses a magnetic transition. The approach used in the discussion was found to be useful for explanation of unusual aspects of susceptibility and heat capacity data from the single crystals of La0.7Ca0.3MnO3.