Anomalous Nernst Effect in Ferromagnets

ORAL

Abstract

We study the intrinsic contribution to the anomalous Nernst effect in ferromagnets at low temperatures. It is shown that the anomalous Nernst conductivity is of topological nature and can be related to the Berry phase of occupied Bloch states. In ferromagnets, there may be nonzero magnetization current even in thermodynamic equilibrium. It can significantly change the thermoelectric transport coefficients. The Onsager relation is established for the charge and heat transport coefficients. Our theory well explains recent experimental result.

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Authors

  • Di Xiao

  • Qian Niu

    Department of Physics, University of Texas, Austin, TX 78712, The University of Texas at Austin, Austin, TX 78712, Department of Physics, The University of Texas, Austin, TX 78703, Department of Physics, The University of Texas at Austin, University of Texas at Austin