ISSN:
1434-6036
Keywords:
PACS. 61.10.Nz Single-crystal and powder diffraction - 71.38.+i Polarons and electron-phonon interactions
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: Superstructure reflections due to charge ordering have been observed in single crystals using X-ray diffraction. The critical temperatures for the ordering process are 150 K and 180 K in samples with Sr concentrations of and , respectively. For x =0.125 the charge order transition correlates with a drastic resistivity enhancement, while a much smaller change of the resistivity is found for x = 0.15. It is argued that the onset of charge ordering in the sample with x = 0.125 is related to the suppression of co-operative Jahn-Teller distortions which is initiated by rising ferromagnetism.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050662
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