Emerging spin-orbitronics in van der Waals 2D semiconductors

IF 3.8 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2026-10-05 DOI:10.1063/5.0343296

Tingyu Qu,Shiming Huang,Lianying Zhu,Gyung-Min Choi,Deyi Fu

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引用次数: 0

Abstract

Harnessing multiple quantum degrees of freedom, including spin, valley, and orbital angular momentum, in van der Waals (vdW) semiconductors offers a compelling route beyond conventional charge-based electronics. This perspective examines the rapid rise of spin-orbitronics and orbitronics in two-dimensional (2D) semiconductors, focusing on black phosphorus (BP) and indium selenide (InSe) as representative platforms. BP serves as a unique paradigm for anisotropic spin-orbitronics; its puckered lattice enables highly directional spin transport and a predicted anisotropic orbital Hall effect without requiring strong intrinsic spin–orbit coupling. We discuss the realization of gate-tunable magnetic tunnel junctions using ferromagnetic Co-intercalated BP and highlight the critical role of “clean” indium-assisted vdW contacts in resolving intrinsic spin and orbital dynamics. Complementarily, InSe stands out as a premier candidate for gate-switchable Rashba physics, where electrically modulated inversion-symmetry breaking enables dynamic tuning of spin generation and relaxation regimes. Finally, we outline pathways toward programmable, multi-degree-of-freedom spin-orbitronic devices, such as reconfigurable spin diodes and orbital-torque memories, integrated within all-vdW architectures.

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范德华二维半导体中新兴的自旋轨道电子学

在范德华（vdW）半导体中利用多个量子自由度，包括自旋、谷和轨道角动量，提供了一种超越传统电荷电子的引人注目的途径。这一视角考察了二维（2D）半导体中自旋轨道电子和轨道电子的快速崛起，重点关注黑磷（BP）和硒化铟（InSe）作为代表平台。BP是研究各向异性自旋-轨道电子学的独特范例；它的褶皱晶格可以实现高度定向的自旋输运和预测的各向异性轨道霍尔效应，而不需要强的本征自旋轨道耦合。我们讨论了利用铁磁共插层BP实现栅极可调谐磁隧道结，并强调了“清洁”铟辅助vdW触点在解析自旋和轨道动力学方面的关键作用。此外，InSe作为门可切换Rashba物理的首选候选材料脱颖而出，其中电调制的逆对称破缺可以动态调整自旋产生和弛豫机制。最后，我们概述了在全vdw架构中集成可编程、多自由度自旋-轨道器件的途径，如可重构自旋二极管和轨道扭矩存储器。

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.