Highly efficient spin-to-charge current conversion at room temperature in strained HgTe surface states

Abstract : We report the observation of spin-to-charge current conversion in strained mercury telluride at room temperature, using spin pumping experiments. The conversion rates are found to be very high, with inverse Edelstein lengths up to 2.0 +/- 0.5 nm. The influence of the HgTe layer thickness on the conversion efficiency has been studied, as well as the role of a HgCdTe barrier inserted in-between the HgTe and NiFe layers. These measurements, associated to the temperature dependence of the resistivity, allows to ascribe these high conversion rates to the spin momentum locking property of HgTe surface states.
Type de document :
Pré-publication, Document de travail
2017
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https://hal.archives-ouvertes.fr/hal-01614284
Contributeur : Laurent Vila <>
Soumis le : mardi 10 octobre 2017 - 16:31:38
Dernière modification le : vendredi 9 mars 2018 - 16:38:03

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  • HAL Id : hal-01614284, version 1
  • ARXIV : 1708.05470

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P. Noel, C. Thomas, Y. Fu, L. Vila, B. Haas, et al.. Highly efficient spin-to-charge current conversion at room temperature in strained HgTe surface states. 2017. 〈hal-01614284〉

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