Phonon promoted charge density wave in topological kagome metal ScV6Sn6

Yong Hu (), Junzhang Ma, Yinxiang Li, Yuxiao Jiang, Dariusz Jakub Gawryluk, Tianchen Hu, Jérémie Teyssier, Volodymyr Multian, Zhouyi Yin, Shuxiang Xu, Soohyeon Shin, Igor Plokhikh, Xinloong Han, Nicholas C. Plumb, Yang Liu, Jia-Xin Yin, Zurab Guguchia, Yue Zhao, Andreas P. Schnyder, Xianxin Wu (), Ekaterina Pomjakushina, M. Zahid Hasan, Nanlin Wang and Ming Shi ()
Additional contact information
Yong Hu: Paul Scherrer Institut
Junzhang Ma: City University of Hong Kong
Yinxiang Li: University of Shanghai for Science and Technology
Yuxiao Jiang: Princeton University
Dariusz Jakub Gawryluk: Paul Scherrer Institut
Tianchen Hu: Peking University
Jérémie Teyssier: University of Geneva
Volodymyr Multian: Institute of Physics
Zhouyi Yin: Southern University of Science and Technology of China
Shuxiang Xu: Peking University
Soohyeon Shin: Paul Scherrer Institut
Igor Plokhikh: Paul Scherrer Institut
Xinloong Han: University of Chinese Academy of Sciences
Nicholas C. Plumb: Paul Scherrer Institut
Yang Liu: Zhejiang University
Jia-Xin Yin: Southern University of Science and Technology
Zurab Guguchia: Paul Scherrer Institute
Yue Zhao: Southern University of Science and Technology of China
Andreas P. Schnyder: Max-Planck-Institut für Festkörperforschung
Xianxin Wu: Chinese Academy of Sciences
Ekaterina Pomjakushina: Paul Scherrer Institut
M. Zahid Hasan: Princeton University
Nanlin Wang: Peking University
Ming Shi: Paul Scherrer Institut

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract Charge density wave (CDW) orders in vanadium-based kagome metals have recently received tremendous attention, yet their origin remains a topic of debate. The discovery of ScV6Sn6, a bilayer kagome metal featuring an intriguing $$\sqrt{3}\times\sqrt{3}\times3$$ 3 × 3 × 3 CDW order, offers a novel platform to explore the underlying mechanism behind the unconventional CDW. Here, we combine high-resolution angle-resolved photoemission spectroscopy, Raman scattering and density functional theory to investigate the electronic structure and phonon modes of ScV6Sn6. We identify topologically nontrivial surface states and multiple van Hove singularities (VHSs) in the vicinity of the Fermi level, with one VHS aligning with the in-plane component of the CDW vector near the $$\bar{K}$$ K ¯ point. Additionally, Raman measurements indicate a strong electron-phonon coupling, as evidenced by a two-phonon mode and new emergent modes. Our findings highlight the fundamental role of lattice degrees of freedom in promoting the CDW in ScV6Sn6.

Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
https://www.nature.com/articles/s41467-024-45859-y 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_s41467-024-45859-y

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

DOI: 10.1038/s41467-024-45859-y

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 ().