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arXiv · 2312.00340

Anisotropic magnetoresistance in single cubic crystals: A theory and its verification

Yu Miao·Junwen Sun·Cunxu Gao·Desheng Xue·X. R. Wang
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Abstract

A theory of anisotropic magnetoresistance (AMR) and planar Hall effect (PHE) in single cubic crystals and its experimental verifications are presented for the current in the (001) plane. In contrast to the general belief that AMR and PHE in single crystals are highly sensitive to many internal and external effects and have no universal features, the theory predicts universal angular dependencies of longitudinal and transverse resistivity and various characteristics when magnetization rotates in the (001) plane, the plane perpendicular to the current, and the plane containing the current and [001] direction. The universal angular dependencies are verified by the experiments on Fe30Co70 single cubic crystal film. The findings provide new avenues for fundamental research and applications of AMR and PHE, because single crystals offer advantages over polycrystalline materials for band structure and crystallographic orientation engineering.

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Yu Miao, Junwen Sun, Cunxu Gao, Desheng Xue, X. R. Wang. 2023-12-01. Anisotropic magnetoresistance in single cubic crystals: A theory and its verification. https://arxiv.org/abs/2312.00340

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