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{
"metadata": {
"edited_by": 576,
"owner": 826,
"_oai": {
"id": "oai:materialscloud.org:2087"
},
"description": "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 ScV\u2086Sn\u2086, a bilayer kagome metal featuring an intriguing \u221a3 x \u221a3 x 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 ScV\u2086Sn\u2086. 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 \u0305 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 ScV\u2086Sn\u2086.",
"mcid": "2024.42",
"id": "2087",
"license": "Creative Commons Attribution 4.0 International",
"license_addendum": null,
"references": [
{
"citation": "Yong Hu, Junzhang Ma, Yinxiang Li, Yuxiao Jiang, Dariusz Jakub Gawryluk, Tianchen Hu, J\u00e9r\u00e9mie Teyssier, Volodymyr Multian, Zhouyi Yin, Shuxiang Xu, Soohyeon Shin, Igor Plokhikh8, 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. Phonon promoted charge density wave in topological kagome metal ScV6Sn6. Nat. Commun. (2024)",
"type": "Journal reference",
"doi": "10.1038/s41467-024-45859-y"
}
],
"doi": "10.24435/materialscloud:tw-tw",
"keywords": [
"Kagome metal ScV6Sn6",
"ARPES, Raman, STM, DFT",
"NCCR MARVEL"
],
"contributors": [
{
"affiliations": [
"Photon Science Division, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland",
"Center of Quantum Materials and Devices and Department of Applied Physics, Chongqing University, Chongqing 401331, China"
],
"familyname": "Hu",
"email": "yong.hu@psi.ch",
"givennames": "Yong"
},
{
"affiliations": [
"Department of Physics, City University of Hong Kong, Kowloon, Hong Kong, China",
"City University of Hong Kong Shenzhen Research Institute, Shenzhen, China",
"Hong Kong Institute for Advanced Study, City University of Hong Kong, Kowloon, Hong Kong, China"
],
"familyname": "Ma",
"givennames": "Junzhang"
},
{
"affiliations": [
"College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China"
],
"familyname": "Li",
"givennames": "Yinxiang"
},
{
"affiliations": [
"Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, USA"
],
"familyname": "Jiang",
"givennames": "Yuxiao"
},
{
"affiliations": [
"Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Gawryluk",
"givennames": "Dariusz Jakub"
},
{
"affiliations": [
"International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China"
],
"familyname": "Hu",
"givennames": "Tianchen"
},
{
"affiliations": [
"Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland"
],
"familyname": "Teyssier",
"givennames": "J\u00e9r\u00e9mie"
},
{
"affiliations": [
"Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland",
"Advanced Materials Nonlinear Optical Diagnostics lab, Institute of Physics, NAS of Ukraine, 46 Nauky pr., 03028 Kyiv, Ukraine"
],
"familyname": "Multian",
"givennames": "Volodymyr"
},
{
"affiliations": [
"Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology of China, Shenzhen, Guangdong 518055, China"
],
"familyname": "Yin",
"givennames": "Zhouyi"
},
{
"affiliations": [
"International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871,"
],
"familyname": "Xu",
"givennames": "Shuxiang"
},
{
"affiliations": [
"Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Shin",
"givennames": "Soohyeon"
},
{
"affiliations": [
"Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Plokhikh",
"givennames": "Igor"
},
{
"affiliations": [
"Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China"
],
"familyname": "Han",
"email": "xxwu@itp.ac.cn",
"givennames": "Xinloong"
},
{
"affiliations": [
"Photon Science Division, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Plumb",
"givennames": "Nicholas C."
},
{
"affiliations": [
"Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou 310058, China"
],
"familyname": "Liu",
"givennames": "Yang"
},
{
"affiliations": [
"Department of physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China"
],
"familyname": "Yin",
"givennames": "Jia-Xin"
},
{
"affiliations": [
"Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Guguchia",
"givennames": "Zurab"
},
{
"affiliations": [
"Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology of China, Shenzhen, Guangdong 518055, China"
],
"familyname": "Zhao",
"givennames": "Yue"
},
{
"affiliations": [
"Max-Planck-Institut f\u00fcr Festk\u00f6rperforschung, Heisenbergstrasse 1, D-70569 Stuttgart, Germany"
],
"familyname": "Schnyder",
"givennames": "Andreas P."
},
{
"affiliations": [
"CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China"
],
"familyname": "Wu",
"givennames": "Xianxin"
},
{
"affiliations": [
"Laboratory for Multiscale Materials Experiments, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Pomjakushina",
"givennames": "Ekaterina"
},
{
"affiliations": [
"Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, NJ, USA"
],
"familyname": "Hasan",
"givennames": "M. Zahid"
},
{
"affiliations": [
"International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China",
"Beijing Academy of Quantum Information Sciences, Beijing 100913, China",
"Collaborative Innovation Center of Quantum Matter, Beijing 100871, China"
],
"familyname": "Wang",
"givennames": "Nanlin"
},
{
"affiliations": [
"Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou 310058, China",
"Photon Science Division, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Shi",
"email": "ming.shi@psi.ch",
"givennames": "Ming"
}
],
"conceptrecid": "2086",
"version": 1,
"publication_date": "Mar 03, 2024, 23:33:33",
"is_last": true,
"status": "published",
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"description": "Orbital Resolved Band Structure of ScV6Sn6",
"key": "Orbital Resolved Band Structure of ScV6Sn6.zip"
},
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"description": "Ab-plane resistivity of ScV6Sn6",
"key": "resistivity.xlsx"
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"title": "Phonon promoted charge density wave in topological kagome metal ScV\u2086Sn\u2086"
},
"id": "2087",
"updated": "2024-03-03T22:33:34.025788+00:00",
"created": "2024-02-17T20:08:41.982218+00:00",
"revision": 4
}