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arXiv 0708.3231cond-mat.mes-hall
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补偿反铁磁体引起的电流感应转矩

Current-induced torques due to compensated antiferromagnets

Paul M. Haney A. H. MacDonald

摘要:

本文分析了在含有补偿反铁磁体的电路中,电流感应转矩对铁磁体磁化结构的影响。我们认为,这些扭矩一般是非零的,并支持这一结论与一个微观NEGF计算电路包含反铁磁NiMn和铁磁Co层。由于对称性决定了电流感应转矩形式的差异,表达铁磁体配置对电流和外部磁场的依赖性的相图与其铁磁体对应物在性质上不同。

英文摘要:

We analyse the influence of current induced torques on the magnetization configuration of a ferromagnet in a circuit containing a compensated antiferromagnet. We argue that these torques are generically non-zero and support this conclusion with a microscopic NEGF calculation for a circuit containing antiferromagnetic NiMn and ferromagnetic Co layers. Because of symmetry dictated differences in the form of the current-induced torque, the phase diagram which expresses the dependence of ferromagnet configuration on current and external magnetic field differs qualitatively from its ferromagnet-only counterpart.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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