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 1.1 4区物理与天体物理 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Magnetics Letters 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

IEEE Magnetics Letters PHYSICS, APPLIED-

CiteScore

2.40

自引率

0.00%

发文量

期刊介绍： IEEE Magnetics Letters is a peer-reviewed, archival journal covering the physics and engineering of magnetism, magnetic materials, applied magnetics, design and application of magnetic devices, bio-magnetics, magneto-electronics, and spin electronics. IEEE Magnetics Letters publishes short, scholarly articles of substantial current interest. IEEE Magnetics Letters is a hybrid Open Access (OA) journal. For a fee, authors have the option making their articles freely available to all, including non-subscribers. OA articles are identified as Open Access.