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首页> 外文期刊>Physical review >Large enhancement of the spin Hall effect in Au by side-jump scattering on Ta impurities
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Large enhancement of the spin Hall effect in Au by side-jump scattering on Ta impurities

机译：通过Ta杂质的侧跃散射大大增强了Au中的自旋霍尔效应

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摘要

We present measurements of the spin Hall effect (SHE) in AuW and AuTa alloys for a large range of W or Ta concentrations by combining experiments on lateral spin valves and ferromagnetic-resonance/spin-pumping techniques. The main result is the identification of a large enhancement of the spin Hall angle (SHA) by the side-jump mechanism on Ta impurities, with a SHA as high as +0.5 (i.e., 50%) forabout 10% of Ta. In contrast, the SHA in AuW does not exceed +0.15 and can be explained by intrinsic SHE of the alloy without significant extrinsic contribution from skew or side-jump scattering by W impurities. The AuTa alloys, as they combine a very large SHA with a moderate resistivity (smaller than 85 μΩcm), are promising for spintronic devices exploiting the SHE.
机译：我们通过结合侧向自旋阀的实验和铁磁共振/自旋泵浦技术，对大范围的W或Ta浓度的AuW和AuTa合金中的自旋霍尔效应（SHE）进行了测量。主要结果是通过侧跃机理对Ta杂质进行了旋转霍尔角（SHA）的大幅提高，SHA值高达+0.5（即50％），约为Ta的10％。相反，AuW中的SHA不会超过+0.15，并且可以用合金的固有SHE来解释，而不会因W杂质引起的偏斜或侧跳散射而产生明显的外在贡献。 AuTa合金结合了非常大的SHA和适度的电阻率（小于85μΩcm），因此对于利用SHE的自旋电子器件很有希望。

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  • 来源
    《Physical review》 |2017年第14期|140405.1-140405.5|共5页
  • 作者

    P. Laczkowski; Y. Fu; H. Yang; J.-C. Rojas-Sanchez; P. Noel; V. T. Pham; G. Zahnd; C. Deranlot; S. Collin; C. Bouard; P. Warin; V. Maurel; M. Chshiev; A. Marty; J.-P. Attand; A. Fert; H. Jaffres; L. Vila; J.-M. George;

  • 作者单位

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France ,Unite Mixte de Physique CNRS-Thales, Univ. Paris-sud, Universiti Paris-Saclay 11, 91767 Palaiseau, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    Institut Jean Lamour, CNRS-Universite de Lorraine, 54506 Vandoeuvre les Nancy, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    Unite Mixte de Physique CNRS-Thales, Univ. Paris-sud, Universiti Paris-Saclay 11, 91767 Palaiseau, France;

    Unite Mixte de Physique CNRS-Thales, Univ. Paris-sud, Universiti Paris-Saclay 11, 91767 Palaiseau, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    Universite Grenoble Alpes, Symmes, CEA-INAC, F-38000 Grenoble, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    Unite Mixte de Physique CNRS-Thales, Univ. Paris-sud, Universiti Paris-Saclay 11, 91767 Palaiseau, France;

    Unite Mixte de Physique CNRS-Thales, Univ. Paris-sud, Universiti Paris-Saclay 11, 91767 Palaiseau, France;

    University Grenoble Alpes, Spintec, CEA-INAC and CNRS, F-38000 Grenoble, France;

    Unite Mixte de Physique CNRS-Thales, Univ. Paris-sud, Universiti Paris-Saclay 11, 91767 Palaiseau, France;

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