Dzyaloshinskii–Moriya和偶极-偶极相互作用对Pt（664）表面有限长Co链自发磁化反转时间的影响

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-12-05 DOI:10.1109/LMAG.2022.3226656

Sergey V. Kolesnikov;Ekaterina S. Sapronova

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引用次数: 0

摘要

在经典有效理论的框架下，研究了Pt（664）表面有限长Co链的自发磁化反转。有效理论包括海森堡交换相互作用、磁各向异性能、Dzyaloshinskii–Moriya相互作用（DMI）和偶极-偶极相互作用。采用测地线轻推弹性带方法计算有限长钴链磁化反转的能垒。自发磁化反转时间的计算表明，在高于10.9K的温度下可以忽略偶极-偶极相互作用。在高于60.2K的温度下，可以忽略DMI。这意味着DMI可以显著影响低温下的磁化反转过程，应予以考虑。

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Influence of Dzyaloshinskii–Moriya and Dipole–Dipole Interactions on Spontaneous Magnetization Reversal Time of Finite-Length Co Chains on Pt(664) Surfaces

The spontaneous magnetization reversal of the finite-length Co chains on Pt(664) surface is investigated in the framework of the classical effective theory. The effective theory includes the Heisenberg exchange interaction, magnetic anisotropy energy, Dzyaloshinskii–Moriya interaction (DMI), and dipole–dipole interaction. The geodesic-nudged elastic band method is employed for calculations of the energy barriers for magnetization reversal of the finite-length Co chains. The calculation of the spontaneous magnetization reversal time shows that the dipole–dipole interaction can be neglected at a temperatures higher than 10.9 K. DMI can be neglected at temperatures higher than 60.2 K. This means that DMI can significantly influence the magnetization reversal process at low temperatures and should be taken into account.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.