Tunable magnetic anisotropy in 2D magnets via molecular adsorption,Journal of Materials Chemistry C

当前位置： X-MOL 学术 › J. Mater. Chem. C › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Tunable magnetic anisotropy in 2D magnets via molecular adsorption
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2020-09-29 , DOI: 10.1039/d0tc04049e
Cheng Tang _{1,

2,

3,

4,

5} , Lei Zhang _{1,

2,

3,

4,

5} , Aijun Du _{1,

2,

3,

4,

5}

Affiliation

2D ferromagnets show promising applications in low energy spintronics. However, the small magnetic anisotropy imposes a great limitation on the application scope. By using first principles modelling, we for the first-time report substantial tuning of magnetic anisotropy of a ferromagnetic CrI₃ monolayer via a molecular adsorption strategy. We find that electron or hole doping has a significant impact on the magnetic anisotropy energy of 2D CrI₃. Then we propose to realize charge carrier doping by the adsorption of electrophilic/nucleophilic molecules (TCNQ/TTF) on 2D CrI₃. The largely controllable magnetic anisotropy is confirmed due to the interfacial electrostatic effects. Additionally, the out-of-plane magnetic anisotropy is also sensitive to the concentrations of organic molecules. The highest value reaches 1.17 meV Cr⁻¹ in the hole-doped TCNQ-CrI₃, while the lowest one is 0.20 meV Cr⁻¹ in the electron-doped TTF-CrI₃. Our work offers a feasible route to modulate the magnetic anisotropy of 2D magnets for practical magnetic applications.

中文翻译：

通过分子吸附可调节2D磁体中的磁各向异性

二维铁磁体在低能自旋电子学中显示出广阔的应用前景。但是，小的磁各向异性对应用范围造成很大的限制。通过使用第一原理建模，我们首次报告了通过分子吸附策略对铁磁CrI ₃单层的各向异性进行了实质性调整。我们发现电子或空穴掺杂对2D CrI ₃的磁各向异性能有重大影响。然后我们提出通过在2D CrI ₃上吸附亲电/亲核分子（TCNQ / TTF）来实现载流子掺杂。由于界面静电效应，证实了在很大程度上可控制的磁各向异性。另外，面外磁各向异性也对有机分子的浓度敏感。空穴掺杂的TCNQ-CrI ₃中的最大值达到1.17meV Cr ^-1，而电子掺杂的TTF-CrI _3中的最小值为0.20meV Cr ^-1。我们的工作为实际的磁性应用提供了一种可行的方法来调节2D磁体的磁各向异性。

更新日期：2020-10-14

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11