铂薄膜磁阻中的自旋积累效应

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films Pub Date : 2025-09-11 DOI:10.1016/j.tsf.2025.140794

Larisa Naumova, Mikhail Milyaev, Roman Zavornitsyn, Ivan Yasyulevich, Nikolay Bebenin, Irina Maksimova, Tatiana Krinitsina, Timofey Novikov, Evgeny Patrakov, Vyacheslav Proglyado, Ivan Kamensky, Vladimir Ustinov

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引用次数: 0

摘要

采用磁控溅射法制备了铂薄膜。结果表明，当磁场沿电流方向或垂直于电流和薄膜平面时，磁电阻为正，而当磁场作用于垂直于电流的薄膜平面时，磁电阻为负。比较了正磁阻和负磁阻对温度和厚度的依赖性，发现了汉勒磁阻对温度和厚度的贡献。在自旋轨道相互作用引起的磁电阻尺寸效应理论的框架下，分析了汉勒磁电阻的厚度依赖性。估计了铂中自旋霍尔角的值。

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Spin accumulation effects in magnetoresistance of thin platinum films

Thin platinum films were prepared by magnetron sputtering. It is found that when the field is along the current or perpendicular to both the current and the film plane, the magnetoresistance is positive while if the field is applied in the film plane perpendicular to the current, the magnetoresistance is negative. The temperature and thickness dependences of the positive and negative magnetoresistance are compared and the contribution due to the Hanle magnetoresistance is found. The thickness dependence of the Hanle magnetoresistance are analyzed within the framework of the theory of size effects in magnetoresistance caused by spin-orbit interaction. The value of the spin Hall angle in platinum is estimated.

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来源期刊

Thin Solid Films 工程技术-材料科学：膜

CiteScore

4.00

自引率

4.80%

发文量

381

审稿时长

7.5 months

期刊介绍： Thin Solid Films is an international journal which serves scientists and engineers working in the fields of thin-film synthesis, characterization, and applications. The field of thin films, which can be defined as the confluence of materials science, surface science, and applied physics, has become an identifiable unified discipline of scientific endeavor.