Spectroscopic signature of obstructed surface states in SrIn2P2

Xiang-Rui Liu, Hanbin Deng, Yuntian Liu, Zhouyi Yin, Congrun Chen, Yu-Peng Zhu, Yichen Yang, Zhicheng Jiang, Zhengtai Liu, Mao Ye, Dawei Shen, Jia-Xin Yin, Kedong Wang, Qihang Liu (), Yue Zhao () and Chang Liu ()
Additional contact information
Xiang-Rui Liu: Southern University of Science and Technology (SUSTech)
Hanbin Deng: Southern University of Science and Technology (SUSTech)
Yuntian Liu: Southern University of Science and Technology (SUSTech)
Zhouyi Yin: Southern University of Science and Technology (SUSTech)
Congrun Chen: Southern University of Science and Technology (SUSTech)
Yu-Peng Zhu: Southern University of Science and Technology (SUSTech)
Yichen Yang: Chinese Academy of Sciences
Zhicheng Jiang: Chinese Academy of Sciences
Zhengtai Liu: Chinese Academy of Sciences
Mao Ye: Chinese Academy of Sciences
Dawei Shen: Chinese Academy of Sciences
Jia-Xin Yin: Princeton University
Kedong Wang: Southern University of Science and Technology (SUSTech)
Qihang Liu: Southern University of Science and Technology (SUSTech)
Yue Zhao: Southern University of Science and Technology (SUSTech)
Chang Liu: Southern University of Science and Technology (SUSTech)

Nature Communications, 2023, vol. 14, issue 1, 1-8

Abstract: Abstract The century-long development of surface sciences has witnessed the discoveries of a variety of quantum states. In the recently proposed “obstructed atomic insulators”, symmetric charges are pinned at virtual sites where no real atoms reside. The cleavage through these sites could lead to a set of obstructed surface states with partial electronic occupation. Here, utilizing scanning tunneling microscopy, angle-resolved photoemission spectroscopy and first-principles calculations, we observe spectroscopic signature of obstructed surface states in SrIn2P2. We find that a pair of surface states that are originated from the pristine obstructed surface states split in energy by a unique surface reconstruction. The upper branch is marked with a striking differential conductance peak followed by negative differential conductance, signaling its localized nature, while the lower branch is found to be highly dispersive. This pair of surface states is in consistency with our calculational results. Our finding not only demonstrates a surface quantum state induced by a new type of bulk-boundary correspondence, but also provides a platform for exploring efficient catalysts and related surface engineering.

Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-023-38589-0 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-38589-0

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-023-38589-0

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().