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Vibron-assisted spin relaxation at a metal/organic interface

机译：金属/有机界面上的振子辅助自旋弛豫

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摘要

Inspired by recent experiments for hybrid organic-ferromagnet interfaces, we propose a spin-relaxation mechanism which does not depend on either the spin-orbit or the hyperfine interaction. This takes place when a molecule with initial spin imbalance is weakly coupled to a metal surface and can be excited in various vibrational states. In such a situation the electron-vibron interaction promotes the exchange of spin-polarized electrons between the molecule and the surface, serving as an energy and angular momentum reservoir. This process leads to an effective spin relaxation of the electron population in the molecule. We suggest that this nonequilibrium mechanism can be investigated through time-resolved spin-polarized scanning tunneling microscopy experiments.
机译：受最近混合有机-铁磁体界面实验的启发，我们提出了一种自旋松弛机制，该机制不依赖于自旋轨道或超精细相互作用。当具有初始自旋不平衡的分子与金属表面弱耦合并且可以在各种振动状态下激发时，就会发生这种情况。在这种情况下，电子-氟离子相互作用促进了分子与表面之间自旋极化电子的交换，从而充当了能量和角动量的储存库。该过程导致分子中电子种群的有效自旋弛豫。我们建议可以通过时间分辨自旋极化扫描隧道显微镜实验研究这种非平衡机制。

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  • 来源
    《Physical review》 |2015年第22期|224427.1-224427.6|共6页
  • 作者

    A. Droghetti; I. Rungger; M. Cinchetti; S. Sanvito;

  • 作者单位

    School of Physics, AMBER and CRANN Institute, Trinity College, Dublin 2, Ireland ,Nano-Bio Spectroscopy Group and European Theoretical Spectroscopy Facility (ETSF), Universidad del Pais Vasco CFM CSIC-UPV/EHU-MPC and DIPC, Av. Tolosa 72, 20018 San Sebastian, Spain;

    School of Physics, AMBER and CRANN Institute, Trinity College, Dublin 2, Ireland ,National Physical Laboratory, Hampton Road, TW11 OLW, United Kingdom;

    Department of Physics and Research Center OPTIMAS, University of Kaiserslautem, Erwin-Schroedinger Strasse 46, 67663 Kaiserslautem, Germany;

    School of Physics, AMBER and CRANN Institute, Trinity College, Dublin 2, Ireland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spin transport through interfaces; spin relaxation and scattering; coulomb blockade; single-electron tunneling;

    机译：通过接口旋转传输;自旋弛豫和散射;库仑封锁;单电子隧穿;

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