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Phys Rev Lett
; 85(12): 2553-6, 2000 Sep 18.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10978105
RESUMO
We use neutron scattering to demonstrate the presence of lattice polarons and their short-range correlations for several samples of La1-xCaxMnO3 in the Ca doping range 0.15=x=0.3. We establish the doping dependence of the orientation, commensuration, and coherence length of the polaron correlations and show that the populations of correlated and uncorrelated polarons are intimately related to the transport properties of the materials.
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