Toward Room-Temperature Electrical Control of Magnetic Order in Multiferroic van der Waals Materials

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2022-05-31 DOI:10.1021/acs.nanolett.2c00930

Chengxi Huang, Jian Zhou, Huasheng Sun, Fang Wu, Yusheng Hou* and Erjun Kan*,

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引用次数: 18

Abstract

Electrical control of magnetic order in van der Waals (vdW) two-dimensional (2D) systems is appealing for high-efficiency and low-dissipation nanospintronic devices. For realistic applications, a vdW 2D material with ferromagnetic (FM) and ferroelectric (FE) orders coexisting and strongly coupling at room temperature is urgently needed. Here we present a potential candidate for nonvolatile electric-field control of magnetic orders at room temperature. Using first-principles calculations, we predict the coexistence of room-temperature FM and FE orders in a 2D transition metal carbide, where the spatial distribution of magnetic moments strongly couples with the orientation of out-of-plane electric polarization. Furthermore, an electric-field switching between interfacial FM and ferrimagnetic orders is realizable through constructing a multiferroic vdW heterostructure based on this material. These findings make a significant step toward realizing room-temperature multiferroicity and strong magnetoelectric coupling in 2D materials.

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多铁范德华材料磁序的室温电控制研究

范德华二维(vdW)系统中磁序的电气控制对高效、低耗散的纳米自旋电子器件具有重要意义。为了实际应用，迫切需要一种在室温下具有铁磁(FM)和铁电(FE)两阶共存且强耦合的vdW二维材料。在这里，我们提出了一种在室温下非易失性电场控制磁序的潜在候选。利用第一性原理计算，我们预测了二维过渡金属碳化物中室温FM阶和FE阶的共存，其中磁矩的空间分布与面外电极化方向强烈耦合。此外，通过构建基于该材料的多铁质vdW异质结构，实现了界面调频级和铁磁级之间的电场切换。这些发现为在二维材料中实现室温多铁性和强磁电耦合迈出了重要的一步。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.