Chirality-Dependent Orbital Bulk Photovoltaic Effect in a 1D Helical Nanowire.

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-10-03 DOI:10.1021/acs.nanolett.5c03640

Lei Yang,Zhikuan Wang,Chuanhui Chen,Jinming Dong,Dongmei Li,Bing Huang,Desheng Liu,Bin Cui

引用次数: 0

Abstract

Bulk photovoltaic effect (BPVE) is a novel nonlinear-optical (NLO) effect for the development of advanced optoelectronic devices. Here, we report a new type of BPVE, chirality-dependent orbital BPVE (orbit-BPVE), in a one-dimensional (1D) helical system, whose orbital-polarized photocurrent is solely determined by the chirality. This orbit-BPVE is contributed by the chirality-dependent orbital angular momentum (OAM), and the chirality-locked spin-BPVE is a secondary effect arising from the orbit-BPVE, mediated by spin-orbit coupling (SOC). The minimal-model calculations further demonstrate that the robust orbit-BPVE persists even at small screw angles and varying SOC strength, and the orbit-BPVE remains more pronounced than spin-BPVE in a wide range of SOC strengths. These results establish 1D chiral systems as a universal platform for orbitronic device engineering, where geometric chirality directly encodes optoelectronic functionality.

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一维螺旋纳米线中手性相关的轨道体光伏效应。

体光伏效应（BPVE）是一种新型的非线性光学效应，用于发展先进的光电器件。本文报道了一维（1D）螺旋体系中一种新型的手性相关轨道BPVE（轨道-BPVE），其轨道极化光电流仅由手性决定。这种轨道- bpve是由手性相关的轨道角动量（OAM）贡献的，而手性锁定的自旋- bpve是由轨道- bpve产生的二次效应，由自旋-轨道耦合（SOC）介导。最小模型计算进一步表明，即使在较小的螺旋角和不同的荷电强度下，轨道- bpve仍然具有鲁棒性，并且在较宽的荷电强度范围内，轨道- bpve比自旋- bpve更加明显。这些结果建立了一维手性系统作为轨道电子器件工程的通用平台，其中几何手性直接编码光电功能。

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.