Renormalization of the tunnel splitting in a rotating nanomagnet

Michael F. OKeeffe; Eugene M. Chudnovsky

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Renormalization of the tunnel splitting in a rotating nanomagnet

机译：旋转纳米磁体中隧道分裂的重新归一化

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We study spin tunneling in a magnetic nanoparticle with biaxial anisotropy that is free to rotate about its anisotropy axis. Equations of motion are derived that couple spin and mechanical degrees of freedom and the exact instanton of these equations is obtained. We show that mechanical freedom of the particle renormalizes magnetic anisotropy and increases the tunnel splitting.

机译：我们研究具有双轴各向异性的磁性纳米粒子中的自旋隧穿，该双轴各向异性可以绕其各向异性轴自由旋转。导出了将自旋和机械自由度耦合在一起的运动方程，并获得了这些方程的精确实例。我们表明，粒子的机械自由度使磁各向异性重新归一化并增加了隧道分裂。

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来源
《Physical review》 |2011年第9期|p.092402.1-092402.4|共4页
作者
Michael F. OKeeffe; Eugene M. Chudnovsky;
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作者单位

Physics Department, Lehman College, City University of New York, 250 Bedford Park Boulevard West, Bronx, New York, 10468-1589, USA;

Physics Department, Lehman College, City University of New York, 250 Bedford Park Boulevard West, Bronx, New York, 10468-1589, USA;

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正文语种 eng
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关键词
molecular magnets;

机译：分子磁铁;

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Renormalization of the tunnel splitting in a rotating nanomagnet

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