Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2001-10-02
Physics
Condensed Matter
Strongly Correlated Electrons
5 pages, 4 figures (in color)
Scientific paper
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.
Narimanov Evgenii E.
Varma Chandra M.
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