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; Ming Shi

doi:10.1038/s41467-024-45859-y

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 WuEkaterina Pomjakushina, M. Zahid Hasan, Nanlin Wang, Ming Shi

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

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 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 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.

Original language	English (US)
Article number	1658
Journal	Nature communications
Volume	15
Issue number	1
DOIs	https://doi.org/10.1038/s41467-024-45859-y
State	Published - Dec 2024

All Science Journal Classification (ASJC) codes

General Chemistry
General Biochemistry, Genetics and Molecular Biology
General Physics and Astronomy

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Hu, Y., Ma, J., Li, Y., Jiang, Y., Gawryluk, D. J., Hu, T., Teyssier, J., Multian, V., Yin, Z., Xu, S., Shin, S., Plokhikh, I., Han, X., Plumb, N. C., Liu, Y., Yin, J. X., Guguchia, Z., Zhao, Y., Schnyder, A. P., ... Shi, M. (2024). Phonon promoted charge density wave in topological kagome metal ScV₆Sn₆. Nature communications, 15(1), Article 1658. https://doi.org/10.1038/s41467-024-45859-y

@article{b93e81d89d0045eea2e24918157ebd0d,

title = "Phonon promoted charge density wave in topological kagome metal ScV6Sn6",

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 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 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.",

author = "Yong Hu and Junzhang Ma and Yinxiang Li and Yuxiao Jiang and Gawryluk, {Dariusz Jakub} and Tianchen Hu and J{\'e}r{\'e}mie Teyssier and Volodymyr Multian and Zhouyi Yin and Shuxiang Xu and Soohyeon Shin and Igor Plokhikh and Xinloong Han and Plumb, {Nicholas C.} and Yang Liu and Yin, {Jia Xin} and Zurab Guguchia and Yue Zhao and Schnyder, {Andreas P.} and Xianxin Wu and Ekaterina Pomjakushina and Hasan, {M. Zahid} and Nanlin Wang and Ming Shi",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2024.",

year = "2024",

month = dec,

doi = "10.1038/s41467-024-45859-y",

language = "English (US)",

volume = "15",

journal = "Nature communications",

issn = "2041-1723",

publisher = "Nature Publishing Group",

number = "1",

}

Hu, Y, Ma, J, Li, Y, Jiang, Y, Gawryluk, DJ, Hu, T, Teyssier, J, Multian, V, Yin, Z, Xu, S, Shin, S, Plokhikh, I, Han, X, Plumb, NC, Liu, Y, Yin, JX, Guguchia, Z, Zhao, Y, Schnyder, AP, Wu, X, Pomjakushina, E, Hasan, MZ, Wang, N & Shi, M 2024, 'Phonon promoted charge density wave in topological kagome metal ScV₆Sn₆', Nature communications, vol. 15, no. 1, 1658. https://doi.org/10.1038/s41467-024-45859-y

TY - JOUR

T1 - Phonon promoted charge density wave in topological kagome metal ScV6Sn6

AU - Hu, Yong

AU - Ma, Junzhang

AU - Li, Yinxiang

AU - Jiang, Yuxiao

AU - Gawryluk, Dariusz Jakub

AU - Hu, Tianchen

AU - Teyssier, Jérémie

AU - Multian, Volodymyr

AU - Yin, Zhouyi

AU - Xu, Shuxiang

AU - Shin, Soohyeon

AU - Plokhikh, Igor

AU - Han, Xinloong

AU - Plumb, Nicholas C.

AU - Liu, Yang

AU - Yin, Jia Xin

AU - Guguchia, Zurab

AU - Zhao, Yue

AU - Schnyder, Andreas P.

AU - Wu, Xianxin

AU - Pomjakushina, Ekaterina

AU - Hasan, M. Zahid

AU - Wang, Nanlin

AU - Shi, Ming

PY - 2024/12

Y1 - 2024/12

N2 - 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 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 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.

AB - 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 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 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.

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U2 - 10.1038/s41467-024-45859-y

DO - 10.1038/s41467-024-45859-y

M3 - Article

C2 - 38395887

AN - SCOPUS:85185975111

SN - 2041-1723

VL - 15

JO - Nature communications

JF - Nature communications

IS - 1

M1 - 1658

ER -

Phonon promoted charge density wave in topological kagome metal ScV₆Sn₆

Abstract

All Science Journal Classification (ASJC) codes

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