Observation of multiple surface states in naturally cleavable chiral crystal PdSbSe

Chiral multifold fermions in topological semimetals host exotic quantum states, but their intuitive spectroscopic studies are often constrained by challenges in achieving high-quality surfaces. In this study, the authors employ high-resolution angle-resolved photoemission spectroscopy (ARPES) in combination with first-principles calculations to uncover multiple chiral Fermi arc surface states in the naturally cleavable topological semimetal PdSbSe. They provide direct spectroscopic evidence of multifold fermions and spin-split bulk bands, firmly establishing PdSbSe as a promising material platform for exploring topological chirality. Furthermore, the identification of high-order Chern numbers and robust surface states provides new insights into chiral electronic structures and paves the way for potential applications in topological quantum devices.

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Publication Details

Journal
Physical Review Materials
Published
2025-03-25
DOI
https://doi.org/10.1103/physrevmaterials.9.l031201
Primary Topic
Topological Materials and Phenomena
Type
article
Field-Weighted Citation Impact
0.00

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article

Observation of multiple surface states in naturally cleavable chiral crystal PdSbSe

Massimo Tallarida, Yunhao Lu, Zhengtai Liu, Yichen Yang et al.
Physical Review Materials
Topological Materials and Phenomena
article

Observation of multiple surface states in naturally cleavable chiral crystal PdSbSe

Massimo Tallarida, Yunhao Lu, Zhengtai Liu, Yichen Yang, Dawei Shen, Yanfeng Guo, Xiangqi Liu, Zhicheng Jiang, J. Dai, Chenqiang Hua, Mao Ye, Jianyang Ding, Jishan Liu, Jiayu Liu
article en

Abstract

Chiral multifold fermions in topological semimetals host exotic quantum states, but their intuitive spectroscopic studies are often constrained by challenges in achieving high-quality surfaces. In this study, the authors employ high-resolution angle-resolved photoemission spectroscopy (ARPES) in combination with first-principles calculations to uncover multiple chiral Fermi arc surface states in the naturally cleavable topological semimetal PdSbSe. They provide direct spectroscopic evidence of multifold fermions and spin-split bulk bands, firmly establishing PdSbSe as a promising material platform for exploring topological chirality. Furthermore, the identification of high-order Chern numbers and robust surface states provides new insights into chiral electronic structures and paves the way for potential applications in topological quantum devices.

Physical Review MaterialsVol. 9(3)
University of Science and Technology of China (CN), ALBA Synchrotron (Spain) (ES), ShanghaiTech University (CN), Shanghai Advanced Research Institute (CN), Shanghai Institute of Microsystem and Information Technology (CN), Zhejiang University (CN)
Natural Science Foundation of Shanghai, National Natural Science Foundation of China, China Postdoctoral Science Foundation, ShanghaiTech University, National Key Research and Development Program of China, Natural Science Foundation of Zhejiang Province
Openalex Percentile: Top 95%
Topological Materials and Phenomena
DOISourceOpenAlex
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