Characterization of unidirectional charge states in <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mi>NbS</mi><msub><mi mathvariant="normal">e</mi><mn>2</mn></msub></mrow></math> nanoribbonlike structures

Lili Zhou; Yu Zhang; Liangguang Jia; Yaoyao Chen; Can Zhang; Fudi Zhou; Shuyi He; Shuangquan Qu; Jia-Bin Qiao; Xiaolong Xu; Teng Zhang; Huixia Yang; Lijun Zhang; Yeliang Wang

doi:10.1103/2clm-692k

Characterization of unidirectional charge states in $NbS e_{2}$ nanoribbonlike structures

Lili Zhou^1,2, Yu Zhang ^1,2,*, Liangguang Jia¹, Yaoyao Chen ¹, Can Zhang^1,2, Fudi Zhou^1,2, Shuyi He¹, Shuangquan Qu¹, Jia-Bin Qiao³ et al.

Xiaolong Xu ¹, Teng Zhang¹, Huixia Yang^1,†, Lijun Zhang⁴, and Yeliang Wang^1,‡

¹School of Integrated Circuits and Electronics, MIIT Key Laboratory for Low-Dimensional Quantum Structure and Devices, Beijing Institute of Technology, Beijing 100081, China
²School of Interdisciplinary Science, Beijing Institute of Technology, Beijing 100081, China
³Centre for Quantum Physics, Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement, School of Physics, Beijing Institute of Technology, Beijing 100081, China
⁴State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Automobile Materials of MOE, Key Laboratory of Material Simulation Methods & Software of MOE, and School of Materials Science and Engineering, Jilin University, Changchun, China

^*Contact author: yzhang@bit.edu.cn
^†Contact author: yanghuixia@bit.edu.cn
^‡Contact author: yeliang.wang@bit.edu.cn

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Phys. Rev. B 112, 035424 – Published 24 July, 2025

DOI: https://doi.org/10.1103/2clm-692k

Abstract

Nanoribbons derived from two-dimensional (2D) materials can exhibit extraordinary electronic properties that are not present in their monolayer counterparts. Fabricating nanoribbons of 2D materials with intrinsic collective electronic states and uncovering the underlying quantum confinement effects are fundamental concepts in both physics and nanotechnology. Monolayer $NbS e_{2}$ is a model system in this regard, as it has been proved to host a $3 \times 3$ charge-density-wave ground state. However, discrete $NbS e_{2}$ nanoribbons have not been produced yet. Here, we successfully fabricate quantities of $NbS e_{2}$ nanoribbonlike structures, where the atoms spontaneously reconstruct into a $7 \times 1$ stripe phase. Our spectroscopic measurements further reveal a unidirectional charge density modulation in $NbS e_{2}$ nanoribbonlike structures, with the charge states exhibiting an out-of-phase accumulation on the two sides of $- 0.15$ V. These findings establish $NbS e_{2}$ nanoribbons as an intriguing platform for exploring one-dimensional-confined collective electronic states, offering a stepping stone toward nanoelectronic devices.

Physical Review B

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Characterization of unidirectional charge states in $NbS e_{2}$ nanoribbonlike structures

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Characterization of unidirectional charge states in NbSe2 nanoribbonlike structures

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Characterization of unidirectional charge states in $NbS e_{2}$ nanoribbonlike structures