Observation of kagome-like bands in two-dimensional semiconducting Cr8Se12

Sisheng Duan, Jing-Yang You, Zhihao Cai, Jian Gou (), Dong Li, Yu Li Huang, Xiaojiang Yu, Siew Lang Teo, Shuo Sun, Yihe Wang, Ming Lin (), Chun Zhang, Baojie Feng (), Andrew T. S. Wee () and Wei Chen ()
Additional contact information
Sisheng Duan: National University of Singapore
Jing-Yang You: National University of Singapore
Zhihao Cai: University of Chinese Academy of Sciences
Jian Gou: Zhejiang University
Dong Li: University of Chinese Academy of Sciences
Yu Li Huang: International Campus of Tianjin University
Xiaojiang Yu: 5 Research Link
Siew Lang Teo: Technology and Research)
Shuo Sun: National University of Singapore
Yihe Wang: National University of Singapore
Ming Lin: Technology and Research)
Chun Zhang: National University of Singapore
Baojie Feng: University of Chinese Academy of Sciences
Andrew T. S. Wee: National University of Singapore
Wei Chen: National University of Singapore

Nature Communications, 2024, vol. 15, issue 1, 1-7

Abstract: Abstract The kagome lattice is a versatile platform for investigating correlated electronic states. However, its realization in two-dimensional (2D) semiconductors for tunable device applications is still challenging. An alternative strategy to create kagome-like bands is to realize a coloring-triangle (CT) lattice in semiconductors through a distortion of a modified triangular lattice. Here, we report the observation of low-energy kagome-like bands in a semiconducting 2D transition metal chalcogenide—Cr8Se12 with a thickness of 7 atomic layers—which exhibits a CT lattice and a bandgap of 0.8 eV. The Cr-deficient layer beneath the topmost Se-full layer is partially occupied with 2/3 occupancy, yielding a √3 × √3 Cr honeycomb network. Angle-resolved photoemission spectroscopy measurements and first-principles investigations reveal the surface kagome-like bands near the valence band maximum, which are attributed to topmost Se pz orbitals modulated by the honeycomb Cr.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-024-53314-1 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:15:y:2024:i:1:d:10.1038_s41467-024-53314-1

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

DOI: 10.1038/s41467-024-53314-1

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 ().