Electrical Control of Magnetic Phase Transition in a Type-I Multiferroic Double-Metal Trihalide Monolayer.,Physical Review Letters

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Electrical Control of Magnetic Phase Transition in a Type-I Multiferroic Double-Metal Trihalide Monolayer.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-02-14 , DOI: 10.1103/physrevlett.124.067602
Meiling Xu ₁ , Chengxi Huang _{2,

3} , Yinwei Li ₁ , Siyu Liu ₄ , Xin Zhong ₅ , Puru Jena ₃ , Erjun Kan ₂ , Yanchao Wang ₄

Affiliation

Controlling magnetism of two-dimensional multiferroics by an external electric field provides special opportunities for both fundamental research and future development of low-cost electronic nanodevices. Here, we report a general scheme for realizing a magnetic phase transition in 2D type-I multiferroic systems through the reversal of ferroelectric polarization. Based on first-principles calculations, we demonstrate that a single-phase 2D multiferroic, namely, ReWCl_{6} monolayer, exhibits two different low-symmetric (C_{2}) phases with opposite in-plane electric polarization and different magnetic order. As a result, an antiferromagnetic-to-ferromagnetic phase transition can be realized by reversing the in-plane electric polarization through the application of an external electric field. These findings not only enrich the 2D multiferroic family, but also uncover a unique and general mechanism to control magnetism by electric field, thus stimulating experimental interest.

中文翻译：

I型多铁性双金属三卤化物单层中磁性相变的电控制。

通过外部电场控制二维多铁磁性，为基础研究和低成本电子纳米器件的未来发展提供了特殊的机会。在这里，我们报告了一种通过逆转铁电极化来实现2D I型多铁系统中磁性相变的一般方案。基于第一性原理计算，我们证明了单相二维多铁性，即ReWCl_ {6}单层，表现出两个不同的低对称（C_ {2}）相，它们具有相反的面内极化和不同的磁序。结果，可以通过施加外部电场来反转面内极化来实现反铁磁-铁磁相变。这些发现不仅丰富了二维多铁性族，

更新日期：2020-02-14

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