Anisotropic magnetoresistance and anomalous Hall effect in manganite thin films

We report on anisotropic magnetoresistance (AMR) and Hall effect measurements along the &[1bar 10]; and [001] directions in a (110)-oriented La2/3Ca1/3MnO3 thin film. While the electrical resistivity and the ordinary Hall coefficient are smaller for I along [001], evidencing some anisotropy of t...

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Published inJournal of physics. Condensed matter Vol. 17; no. 17; pp. 2733 - 2740
Main Authors Bibes, M, Laukhin, V, Valencia, S, Martínez, B, Fontcuberta, J, Gorbenko, O Yu, Kaul, A R, Martínez, J L
Format Journal Article
LanguageEnglish
Published IOP Publishing 04.05.2005
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ISSN0953-8984
1361-648X
DOI10.1088/0953-8984/17/17/022

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Summary:We report on anisotropic magnetoresistance (AMR) and Hall effect measurements along the &[1bar 10]; and [001] directions in a (110)-oriented La2/3Ca1/3MnO3 thin film. While the electrical resistivity and the ordinary Hall coefficient are smaller for I along [001], evidencing some anisotropy of the Fermi surface, both the AMR and the anomalous Hall coefficient are larger when the current is applied along &[1bar 10];. Since these two phenomena originate from spin-orbit coupling effects, we state that our results support an anisotropy of the spin-orbit interaction in manganites. The possible origin of this anisotropy is discussed.
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ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/17/17/022