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arXiv · 1805.10323

Theory of Cross-correlated Electron-Magnon Transport Phenomena: Case of Magnetic Topological Insulator

Yusuke Imai·Hiroshi Kohno
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Abstract

We study transport phenomena cross-correlated among the heat and electric currents of magnons and Dirac electrons on the surface of ferromagnetic topological insulators. For a perpendicular magnetization, we calculate magnon- (electron-) drag anomalous Nernst/Seebeck (anomalous Ettingshausen/Peltier) effects and magnon-/electron-drag thermal Hall effects. The magnon-drag thermoelectric effects are interpreted to be caused by magnon-induced electromotive force. When the magnetization has in-plane components, there arise thermal/thermoelectric analogs of anisotropic magnetoresistance (AMR). In the insulating state, the thermal AMR is realized as a magnonic analog of AMR.

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Yusuke Imai, Hiroshi Kohno. 2018-07-20. Theory of Cross-correlated Electron-Magnon Transport Phenomena: Case of Magnetic Topological Insulator. https://doi.org/10.7566/jpsj.87.073709

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