ARPES Study of Y<sub>2</sub>O<sub>2</sub>Bi Single Crystals: the Intrinsic Electronic Structure of Bi Square Nets

Abstract The Bi square net, a structural motif in a diverse array of layered compounds, has emerged as a desirable system for investigating the interplay of strong spin-orbit coupling, reduced dimensionality, and magnetism. We present a comprehensive study of Y 2 O 2 Bi single crystals, using high-resolution angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations to elucidate the intrinsic electronic structure of the Bi square net. Our findings reveal a pronounced two-dimensional character of the electronic states, with the Bi square net dominating the low-energy electronic structure. While Y 2 O 2 Bi itself exhibits no topological features, our DFT calculations on related Bi square net compounds reveal that the surrounding crystal environment can induce non-trivial topology, as exemplified by the topological insulator LiBi. This comparative study establishes a crucial benchmark for understanding Bi square net physics and informs the design of future Bi square net-based quantum materials.

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Publication Details

Journal
Chinese Physics B
Published
2025-09-09
DOI
https://doi.org/10.1088/1674-1056/ae04d9
Primary Topic
Topological Materials and Phenomena
Type
article
Field-Weighted Citation Impact
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article

ARPES Study of Y2O2Bi Single Crystals: the Intrinsic Electronic Structure of Bi Square Nets

Zhengtai Liu, Zhi-Peng Cao, Zhanfeng Liu, Dawei Shen et al.
Chinese Physics B
Topological Materials and Phenomena
article

ARPES Study of Y2O2Bi Single Crystals: the Intrinsic Electronic Structure of Bi Square Nets

Zhengtai Liu, Zhi-Peng Cao, Zhanfeng Liu, Dawei Shen, Haoyang Zhou, Zhiyu Shang, Tongrui Li, Yuehong Bi, Zhe Sun, Yunbo Wu, Lidong Zhang, Guobin Zhang, Yi Liu, Yuliang Li, Zongyi Wang, Hui Tian, Xin Zheng, Shengtao Cui
article en

Abstract

Abstract The Bi square net, a structural motif in a diverse array of layered compounds, has emerged as a desirable system for investigating the interplay of strong spin-orbit coupling, reduced dimensionality, and magnetism. We present a comprehensive study of Y 2 O 2 Bi single crystals, using high-resolution angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations to elucidate the intrinsic electronic structure of the Bi square net. Our findings reveal a pronounced two-dimensional character of the electronic states, with the Bi square net dominating the low-energy electronic structure. While Y 2 O 2 Bi itself exhibits no topological features, our DFT calculations on related Bi square net compounds reveal that the surrounding crystal environment can induce non-trivial topology, as exemplified by the topological insulator LiBi. This comparative study establishes a crucial benchmark for understanding Bi square net physics and informs the design of future Bi square net-based quantum materials.

Chinese Physics B
University of Science and Technology of China (CN), Chinese Academy of Sciences (CN), Shanghai Advanced Research Institute (CN), National Synchrotron Radiation Laboratory (CN)
Openalex Percentile: Top 81%
Topological Materials and Phenomena
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