Low temperature charge and orbital textures in La0.875Sr0.125MnO3

By using nuclear magnetic resonance techniques we show that for T<30 K the La0.875Sr0.125MnO3 compound displays a nonuniform charge distribution, comprised of two interconnected Mn ion subsystems with different spin, orbital, and charge couplings. The NMR results agree very well with the two spin...

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Published inPhysical review letters Vol. 96; no. 9; p. 097201
Main Authors Papavassiliou, G, Pissas, M, Diamantopoulos, G, Belesi, M, Fardis, M, Stamopoulos, D, Kontos, A G, Hennion, M, Dolinsek, J, Ansermet, J-Ph, Dimitropoulos, C
Format Journal Article
LanguageEnglish
Published United States 10.03.2006
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Summary:By using nuclear magnetic resonance techniques we show that for T<30 K the La0.875Sr0.125MnO3 compound displays a nonuniform charge distribution, comprised of two interconnected Mn ion subsystems with different spin, orbital, and charge couplings. The NMR results agree very well with the two spin wave stiffness constants observed at small q values in the spin wave dispersion curves [Phys. Rev. B 67, 214430 (2003)]. This picture is probably related to a yet undetermined charge and orbital superstructure occurring in the ferromagnetic insulating state of the La0.875Sr0.125MnO3 compound.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.96.097201