复合自旋电子器件中的磁阻和负差分电阻效应

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-05-08 DOI:10.1016/j.jmmm.2025.173173

Jing Zeng

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引用次数: 0

摘要

应用第一性原理方法，研究了苝分子与两个方形平面四配位Co配合物（CoN4s）与苯或吡嗪基团共价偶联构成的复合自旋电子器件的量子自旋输运性质。由苝分子和两个含吡嗪基团的CoN4s同时组装的复合自旋电子器件的磁电阻（MR）为467%，负微分电阻（NDR）为负。提出了复合自旋电子器件中MR和NDR效应的机理。

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Magnetoresistance and negative differential resistance effects in compound spintronic devices

By applying the first-principles method, quantum spin-transport properties of compound spintronic devices constructed by the covalent coupling of the perylene molecule and two square-planar four-coordinate Co complexes (CoN₄s) with benzene or pyrazine groups are explored. The compound spintronic device assembled by the perylene molecule and two CoN₄s with pyrazine groups simultaneously exhibit magnetoresistance (MR) of 467 % and negative differential resistance (NDR). The mechanisms for the MR and NDR effects found in the compound spintronic device are suggested.

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.