MnSeTe单分子膜手性磁结构的应变控制

IF 3.5 2区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Chinese Physics Letters Pub Date : 2023-01-01 DOI:10.1088/0256-307X/40/1/017501
Z. Wang 王, J. Liang 梁, H. Yang 杨
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引用次数: 0

摘要

手性磁态在未来的自旋电子学应用中很有前景。近年来,二维磁体中手性自旋织构的研究进展,如手性畴壁、skyrmions和bimerons等,引起了广泛的关注。在这里,通过第一性原理计算,我们表明双轴应变可以有效地操纵Janus MnSeTe单层的磁性参数。有趣的是,我们发现海森堡交换耦合、Dzyaloshinskii-Moriya相互作用和磁晶各向异性的磁常数的大小和符号都可以通过应变来调节。此外,通过微磁模拟得到了不同应变下不同的手性自旋织构相图。特别是,我们证明了在MnSeTe单层中可以诱导出丰富的手性磁结构,包括铁磁性斯基米子、斯基米子、双色子和反铁磁性自旋螺旋。我们还讨论了温度对这些磁性结构的影响。这一发现突出了Janus MnSeTe单层作为自旋电子纳米器件的良好候选者。
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Strain-Enabled Control of Chiral Magnetic Structures in MnSeTe Monolayer
Chiral magnetic states are promising for future spintronic applications. Recent progress of chiral spin textures in two-dimensional magnets, such as chiral domain walls, skyrmions, and bimerons, have been drawing extensive attention. Here, via first-principles calculations, we show that biaxial strain can effectively manipulate the magnetic parameters of the Janus MnSeTe monolayer. Interestingly, we find that both the magnitude and the sign of the magnetic constants of the Heisenberg exchange coupling, Dzyaloshinskii–Moriya interaction and magnetocrystalline anisotropy can be tuned by strain. Moreover, using micromagnetic simulations, we obtain the distinct phase diagram of chiral spin texture under different strains. Especially, we demonstrate that abundant chiral magnetic structures including ferromagnetic skyrmion, skyrmionium, bimeron, and antiferromagnetic spin spiral can be induced in the MnSeTe monolayer. We also discuss the effect of temperature on these magnetic structures. The findings highlight the Janus MnSeTe monolayer as a good candidate for spintronic nanodevices.
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来源期刊
Chinese Physics Letters
Chinese Physics Letters 物理-物理:综合
CiteScore
5.90
自引率
8.60%
发文量
13238
审稿时长
4 months
期刊介绍: Chinese Physics Letters provides rapid publication of short reports and important research in all fields of physics and is published by the Chinese Physical Society and hosted online by IOP Publishing.
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