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Electronic charge transfer driven by spin cycloidal structure

机译：由旋转摆线结构驱动的电子电荷转移

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摘要

Muon spin rotation and resonant soft x-ray scattering experiments on prototype multiferroics RMn_2O_5 (R = Y, Sm) are used to demonstrate that the local electric displacements are driven by the spin-current (SC) mechanism. Small local electric displacements were evaluated by observing spin polarization at ligand O ions, for which implanted muons served as an extremely sensitive probe. Our results for YMn_2O_5 provide evidence that the spin polarization of O ions forming a spin cycloid chain with Mn spins increases in proportion to the vector spin chirality (S_i × S_j) of the Mn ions. This relationship strongly indicates that the charge transfer between O and Mn ions is driven by the SC mechanism, which leads to the ferroelectricity accompanying O spin polarization.
机译：MUON旋转旋转和谐振软X射线散射实验在原型多法层RMN_2O_5（R = Y，SM）上用于证明局部电容器由旋转电流（SC）机构驱动。通过观察配体O离子的自旋极化来评估小局部电容器，用于将其植入的μONS用作极其敏感的探针。我们的YMN_2O_5的结果提供了表明，形成具有Mn Spins的旋转环烷基链的O离子的自旋极化与Mn离子的载体旋转手术（S_I×S_J）成比例地增加。这种关系强烈表示O和Mn离子之间的电荷转移由SC机构驱动，这导致伴随o自旋极化的铁电性。

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  • 来源
    《Physical review》 |2020年第22期|224436.1-224436.7|共7页
  • 作者

    Y. Ishii; S. Horio; Y. Noda; M. Hiraishi; H. Okabe; M. Miyazaki; S. Takeshita; A. Koda; K. M. Kojima; R. Kadono; H. Sagayama; H. Nakao; Y. Murakami; H. Kimura;

  • 作者单位

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan Department of Physics Tohoku University Sendai Miyagi 980-8578 Japan;

    Institute of Multidisciplinary Research for Advanced Materials Tohoku University Aoba Sendai 980-8577 Japan;

    Institute of Multidisciplinary Research for Advanced Materials Tohoku University Aoba Sendai 980-8577 Japan;

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Graduate School of Engineering Muroran Institute of Technology Muroran Hokkaido 050-8585 Japan;

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    TRIUMF Centre for Molecular and Material Science (TRIUMF-CMMS) and Quantum Matter Institute University of British Columbia Vancouver BC Canada V6T 2A3;

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Institute of Materials Structure Science (IMSS) High Energy Accelerator Research Organization (KEK) Tsukuba Ibaraki 305-0801 Japan;

    Institute of Multidisciplinary Research for Advanced Materials Tohoku University Aoba Sendai 980-8577 Japan;

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