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Thermally driven pure spin current through mesoscopic ferromagnetic semimetal-normal metal junctions

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Abstract

The thermally driven spin transport through mesoscopic ferromagnetic semimetal-normal metal junctions is investigated. A pure spin current can be enforced by the spin-polarised semimetal band structure and the spin current increases with increasing either the temperature bias or the equilibrium temperature in the ballistic transport regime. It is also found that the sign of the spin current can be inverted by a strong spin-flip barrier at the interface of the junction.

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Authors and Affiliations

  1. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, 210093, P.R. China

    W. Chen, L. Jiang, Z. W. Xing, R. Shen & B. G. Wang

  2. Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, P.R. China

    Z. Z. Zhang

Authors
  1. W. Chen
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  2. Z. Z. Zhang
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  3. L. Jiang
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  4. Z. W. Xing
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  5. R. Shen
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  6. B. G. Wang
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Correspondence to R. Shen.

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Chen, W., Zhang, Z.Z., Jiang, L. et al. Thermally driven pure spin current through mesoscopic ferromagnetic semimetal-normal metal junctions. Eur. Phys. J. B 85, 275 (2012). https://doi.org/10.1140/epjb/e2012-30320-y

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  • DOI: https://doi.org/10.1140/epjb/e2012-30320-y

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