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Toroidal moment in the molecular magnet V_(15)

机译:分子磁体中的环形力矩V_(15)

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摘要

Quantum-mechanical calculations predict the existence of toroidal spin structure in the molecular magnet V_(15). It is shown that nonzero toroidal moment arises from symmetry violation of the exchange interactions between spins of the base triangle of the V_(15) molecule due to the Jahn-Teller effect. It is established that the value of the toroidal moment is connected with value of total spin projection of V_(15) on z axis. It enables to induce the toroidal moment by external magnetic field and (or) to induce the magnetic moment by variable electric field or by current.
机译:量子力学计算预测了分子磁体V_(15)中存在环形自旋结构。结果表明,由于Jahn-Teller效应,V_(15)分子基三角形的自旋之间的交换相互作用对称违反了非零环面矩。确定了环形力矩的值与V_(15)在z轴上的总自旋投影的值有关。它使得能够通过外部磁场来感应环形力矩,并且(或者)能够通过可变电场或通过电流来感应磁矩。

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  • 来源
    《Physical review》 |2009年第17期|172404.1-172404.4|共4页
  • 作者单位

    A.M. Prokhorov General Physics Institute, RAS, 119991 Moscow, Russia Department of Materials Physics, Chemistry Faculty, Universidad del Pais Vasco UPV/EHU, San Sebastian, Spain;

    Institute of Physics and Technology, RAS, Yaroslavl Branch, 150007 Yaroslavl, Russia;

    Moscow Institute of Electronic Technology, 124489 Moscow, Russia;

    Zelenograd Research Institute of Physical Problems, 124460 Moscow, Russia;

    Department of Chemistry, University of Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium;

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

    molecular magnets; magnetomechanical and magnetoelectric effects, magnetostriction;

    机译:分子磁体磁机械和磁电效应;磁致伸缩;

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