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arXiv 0904.2467cond-mat.mes-hallcond-mat.other
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隧道各向异性磁电阻的角度依赖性

Angular dependence of the tunneling anisotropic magnetoresistance

A. Matos-Abiague, M. Gmitra, J. Fabian

摘要:

基于一般的对称性考虑,我们研究如何隧道各向异性磁电阻(TAMR)的磁化方向上的依赖性是由特定形式的自旋轨道耦合场。通过扩展先前提出的用于解释(001)铁磁体/半导体/正常金属磁性隧道结(MTJ)中TAMR的主要趋势的唯象模型[J. Moser { \it et al.},物理修订版信函99,056601(2007)],我们提供了具有不同生长方向的MTJ中的TAMR的统一定性描述。特别是,我们预测的形式的TAMR在(001),(110)和(111)MTJ的结构反转不对称和/或体反转不对称的角度依赖性。研究了面内单轴应变对TAMR的影响。

英文摘要:

Based on general symmetry considerations we investigate how the dependence of the tunneling anisotropic magnetoresistance (TAMR) on the magnetization direction is determined by the specific form of the spin-orbit coupling field. By extending a phenomenological model, previously proposed for explaining the main trends of the TAMR in (001) ferromagnet/semiconductor/normal-metal magnetic tunnel junctions (MTJs) [J. Moser {\it et al.}, Phys. Rev. Lett. 99, 056601 (2007)], we provide a unified qualitative description of the TAMR in MTJs with different growth directions. In particular, we predict the forms of the angular dependence of the TAMR in (001),(110), and (111) MTJs with structure inversion asymmetry and/or bulk inversion asymmetry. The effects of in-plane uniaxial strain on the TAMR are also investigated.

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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