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Phys Rev Lett. 2007 Aug 24;99(8):086602. Epub 2007 Aug 24.

Crossover behavior of the anomalous Hall effect and anomalous nernst effect in itinerant ferromagnets.

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Cryogenic Research Center, University of Tokyo, Tokyo, Japan.


The anomalous Hall effect (AHE) and anomalous Nernst effect (ANE) are experimentally investigated in a variety of ferromagnetic metals including pure transition metals, oxides, and chalcogenides, whose resistivities range over 5 orders of magnitude. For these ferromagnets, the transverse conductivity sigma{xy} versus the longitudinal conductivity sigma{xx} shows a crossover behavior with three distinct regimes in accordance qualitatively with a recent unified theory of the intrinsic and extrinsic AHE. We also found that the transverse Peltier coefficient alpha{xy} for the ANE obeys the Mott rule. These results offer a coherent and semiquantitative understanding of the AHE and ANE to an issue of controversy for many decades.

[Indexed for MEDLINE]

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