期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 22, 期 14, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/22/14/146001
关键词
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资金
- ANPCyT [PICT 03-12397, PICT 33304, PICT 03-12742, PICT 05-38387]
- U N Cuyo
- CONICET [PIP 5250, PIP 5342-05]
We present measurements of the anisotropic magnetoresistance (AMR) of La(0.75)Sr(0.25)MnO(3) films deposited on (001) SrTiO(3) substrates, and a model that describes the experimental results. The model, based on the electronic structure of manganites plus the spin-orbit coupling, correctly accounts for the dependence of the AMR on the direction of the current to the crystalline axes. We measure an AMR of the order of 10(-3) for the current I parallel to the [100] axis of the crystal and vanishing AMR for I parallel to [110], in agreement with the model predictions. Further, we calculate the planar Hall effect and show its connection to AMR.
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