Magnetoelectric Tuning of 2D Ferromagnetism in 1T-CrTe2 through In2Se3 Substrate.

IF 3.7 2区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY Langmuir Pub Date : 2024-10-22 Epub Date: 2024-10-11 DOI:10.1021/acs.langmuir.4c02588
Lijing Luo, Qilong Sun, Meng Guo, Cui Jin, Ying Dai
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Abstract

Electric field control of two-dimensional (2D) materials with optimized magnetic properties is not only of scientific interest but also of technological importance in terms of the functionality of various nanoscale devices. Here, we report the multiferroic control of the 2D ferromagnetism in 1T-CrTe2 monolayer through a ferroelectric In2Se3 sublayer. Our results reveal the effect of polarization switching on the electronic structures and magnetic properties of 1T-CrTe2/In2Se3 heterostructures, enabling effective manipulation of their magnetic anisotropy energy (MAE) and magnetization orientation. Additionally, we also demonstrate the strong dependence of their MAE and switching effect on the external strain and surface hydrogenation. Notably, polarization switching exhibits a reversal modification in the hydrogenated multiferroic structures. These tunable behaviors are primarily attributed to the alteration of p-orbitals near the Fermi level of the interfacial Te atoms due to magnetoelectric coupling. Our findings suggest the potential of 1T-CrTe2/In2Se3 heterojunctions for the practical application of 2D multiferroic spintronic devices.

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通过 In2Se3 衬底对 1T-CrTe2 中的二维铁磁性进行磁电调谐。
对具有优化磁性能的二维(2D)材料进行电场控制不仅具有科学意义,而且对各种纳米级设备的功能具有重要的技术意义。在这里,我们报告了通过铁电 In2Se3 子层对 1T-CrTe2 单层二维铁磁性的多铁电控制。我们的研究结果揭示了极化转换对 1T-CrTe2/In2Se3 异质结构的电子结构和磁性能的影响,从而实现了对其磁各向异性能(MAE)和磁化取向的有效控制。此外,我们还证明了它们的 MAE 和切换效应与外部应变和表面氢化的密切关系。值得注意的是,极化切换在氢化多铁素体结构中表现出反向变化。这些可调行为主要归因于磁电耦合导致的界面 Te 原子费米级附近 p 轨道的改变。我们的研究结果表明,1T-CrTe2/In2Se3 异质结具有实际应用二维多铁氧体自旋电子器件的潜力。
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来源期刊
Langmuir
Langmuir 化学-材料科学:综合
CiteScore
6.50
自引率
10.30%
发文量
1464
审稿时长
2.1 months
期刊介绍: Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).
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