Negative differential resistance in a family of Fe3X4 (X = S, Se, Te) antiferromagnetic semiconducting nanowires

IF 3.5 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-03-27 DOI:10.1063/5.0256111

Jinchao Kang, Qinxi Liu, Xue Jiang, Jijun Zhao

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引用次数: 0

Abstract

The experimentally observed 2D magnets have unlocked the possibility of realizing a stable long-range order in the low-dimensional limit, which also gives a boost to the family of 1D magnets. Recently, a family of Fe-based nanowires has been observed in high-throughput transition metal chalcogenides synthesized by chemical vapor deposition [Zhou et al., Nat. Mater. 22, 450–458 (2023)]. In this work, the atomic configuration, chemical composition, and magnetic properties of Fe3X4 (X = S, Se, Te) nanowires were confirmed by first-principles calculations and Monte Carlo simulations. Due to their intrinsic anisotropic character and strong d-p hybridization, Fe3X4 nanowires exhibit antiferromagnetic semiconducting behavior with good stability, a tunable bandgap of 0.277–0.771 eV, a large vertical magnetic anisotropy energy of 2.39 meV/Fe, and a high Néel temperature of 680–840 K. Moreover, the calculation of the spin transport properties has shown that these Fe3X4 nanowires possess the negative differential resistance behavior with the peak-to-valley current ratio from 1.84 to 6.85. Our results not only expand the database of magnetic nanowires but also provide a low-dimensional platform for multifunctional spin devices.

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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.