基于Fe3GaTe2/CsV3Sb5/Fe3GaTe2范德华异质结的超导自旋电子器件

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2025-10-10 DOI:10.1063/5.0272896

Jing Kong, Heshuang Wei, Jinyu Duan, Yuanyu Song, Gaomeng Hou, Pengfei Liu, Ping Wang, Delin Zhang, Yong Jiang

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引用次数: 0

摘要

范德华异质结（vdW）由于其卓越的界面质量、可扩展性和可调谐的电子特性，已成为下一代自旋电子器件的极有希望的候选者。本文报道了一种基于Fe3GaTe2/CsV3Sb5/Fe3GaTe2的vdW超导异质结，该异质结结合了Fe3GaTe2的强垂直磁各向异性和Kagome金属CsV3Sb5的超导性和电荷密度波阶。值得注意的是，这种超导异质结在2k时表现出0.25%的磁阻，大约是在高温下观察到的两倍。CsV3Sb5中的磁邻近效应通过抑制自旋-单重态库珀配对和实现自旋-三重态来调节超导性。磁性和超导性之间的相互作用不仅阐明了CsV3Sb5中竞争电子序的共存，而且强调了这种异质结在节能，高性能自旋电子器件中的潜力。我们的工作建立了Fe3GaTe2/CsV3Sb5/Fe3GaTe2作为工程自旋极化超导态和推进量子计算技术的有前途的平台。

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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Superconducting spintronic device based on Fe3GaTe2/CsV3Sb5/Fe3GaTe2 van der Waals heterojunctions

van der Waals (vdW) heterojunctions have emerged as highly promising candidates for next-generation spintronic devices, owing to their exceptional interface quality, scalability, and tunable electronic properties. Here, we report a vdW superconducting heterojunction based on the Fe3GaTe2/CsV3Sb5/Fe3GaTe2, which combines the strong perpendicular magnetic anisotropy of Fe3GaTe2 with the superconductivity and charge density wave order of the Kagome metal CsV3Sb5. Notably, this superconducting heterojunction exhibits a magnetoresistance of 0.25% at 2 K, approximately two times higher than that observed at elevated temperatures. The magnetic proximity effect in CsV3Sb5 modulates superconductivity by suppressing spin-singlet Cooper pairing and enabling spin-triplet states. The interplay between magnetism and superconductivity not only elucidates the coexistence of competing electronic orders in CsV3Sb5 but also highlights the potential of such heterojunctions for energy-efficient, high-performance spintronic devices. Our work establishes Fe3GaTe2/CsV3Sb5/Fe3GaTe2 as a promising platform for engineering spin-polarized superconducting states and advancing quantum computing technologies.

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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.