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Charge Hall effect driven by spin-dependent chemical potential gradients and Onsager relations in mesoscopic systems

E. M. Hankiewicz·Jian Li·Tomas Jungwirth·Qian Niu·Shun-Qing Shen·Jairo Sinova
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Abstract

We study theoretically the spin-Hall effect as well as its reciprocal phenomenon (a transverse charge current driven by a spin-dependent chemical potential gradient) in electron and hole finite size mesoscopic systems. The Landauer-Buttiker-Keldysh formalism is used to model samples with mobilities and Rashba coupling strengths which are experimentally accessible and to demonstrate the appearance of measurable charge currents induced by the spin-dependent chemical potential gradient in the reciprocal spin-Hall effect. We also demonstrate that within the mesoscopic coherent transport regime the Onsager relations are fulfilled for the disorder averaged conductances for electron and hole mesoscopic systems.

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E. M. Hankiewicz, Jian Li, Tomas Jungwirth, Qian Niu, Shun-Qing Shen, Jairo Sinova. 2005-05-25. Charge Hall effect driven by spin-dependent chemical potential gradients and Onsager relations in mesoscopic systems. https://doi.org/10.1103/physrevb.72.155305

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