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Sweeping of Lattice Disorder and Associated Phenomena in Colossal Magnetoresistance Compounds

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arxiv cond-mat/0110047 v1 pith:PPTXZZ54 submitted 2001-10-02 cond-mat.str-el cond-mat.mtrl-sci

Evgenii E. Narimanov , Chandra M. Varma This is my paper · ORCID
classification cond-mat.str-elcond-mat.mtrl-sci
keywords disordercolossalcompoundslatticemagnetoresistanceobservedstatetransition
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We show through a variational calculation that in a large range of parameters the paramagnetic to ferromagnetic transition in colossal magnetoresistance compounds is accompanied by a collapse of polaronic lattice disorder in addition to that of spin disorder. The spin-lattice disordered state is shown to be localized and the ordered state itinerant as observed. The observed dramatic change in the diffuse scattering at the transition as well as the isotope effect are also explained.

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