Spin mixing and spin-current asymmetry measured by domain wall magnetoresistance

By making a straightforward reformulation of the Levy-Zhang spin-mistracking model, we show that it is possible to extract the spin asymmetry of a current from measurements of domain wall resistance. Experiments on epitaxial films of L1(0) FePd are reported, showing that, while the micromagnetic str...

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Veröffentlicht in:Physical review letters 2004-03, Vol.92 (9), p.097206-097206, Article 097206
Hauptverfasser: Marrows, C H, Dalton, B C
Format: Artikel
Sprache:eng
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Zusammenfassung:By making a straightforward reformulation of the Levy-Zhang spin-mistracking model, we show that it is possible to extract the spin asymmetry of a current from measurements of domain wall resistance. Experiments on epitaxial films of L1(0) FePd are reported, showing that, while the micromagnetic structure of the sample is stable, the resistivity and the domain wall resistance change by a factor approximately 3 between helium and room temperature. The temperature dependence of the spin asymmetry of the current has been determined over a wide range in a single material.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.92.097206