Anomalous valley Hall effect in two-dimensional multiferroic V2N2O semiconductor

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-10-08 DOI:10.1063/5.0274822

Caijia Sun, Yiyu Sun, Haoshen Ye, Yijie Zhu, Leiming Chen, Huichao Li, G. P. Zhang, Jianli Wang

引用次数: 0

Abstract

Intrinsic ferromagnetism, with coexisting ferroelectric and ferrovalley polarizations in a single two-dimensional semiconductor, is highly desirable for developing next-generation multifunctional nanospintronic devices. Based on first-principles calculations and Monte Carlo simulations, the two-dimensional V2N2O monolayer is predicted to be an indirect bandgap ferromagnetic semiconductor, characterized by a near-room-temperature Curie temperature and an out-of-plane easily magnetized axis. Interestingly, the spontaneous valley polarization can be effectively modulated by the ferroelectric polarization. Remarkably, the anomalous valley Hall effect in the V2N2O monolayer can be controlled by reversing the magnetization. Thus, the V2N2O monolayer is considered a potential candidate for polymorphic memory and multifunctional valley electronic devices.

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二维多铁V2N2O半导体中的反常谷霍尔效应

在单一二维半导体中同时存在铁电和铁谷极化的本征铁磁性，对于开发下一代多功能纳米自旋电子器件是非常理想的。基于第一性原理计算和蒙特卡罗模拟，预测了二维V2N2O单层为间接带隙铁磁半导体，具有接近室温的居里温度和面外易磁化轴。有趣的是，自发谷极化可以被铁电极化有效地调制。值得注意的是，V2N2O单层中的异常谷霍尔效应可以通过反转磁化来控制。因此，V2N2O单层被认为是多态记忆和多功能谷电子器件的潜在候选者。

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

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.