Nature of charge density wave in kagome metal ScV6Sn6
Abstract Recently, kagome lattice materials have emerged as a new model material platform for discovering and engineering novel quantum phases of matter. In this work, we elucidate the driving mechanism of the $$\sqrt{{{3}}}$$ 3 × $$\sqrt{{{3}}}$$ 3 charge order in a newly discovered kagome metal Sc...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-01-01
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| Series: | npj Quantum Materials |
| Online Access: | https://doi.org/10.1038/s41535-024-00620-y |
| _version_ | 1827328784312827904 |
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| author | Seongyong Lee Choongjae Won Jimin Kim Jonggyu Yoo Sudong Park Jonathan Denlinger Chris Jozwiak Aaron Bostwick Eli Rotenberg Riccardo Comin Mingu Kang Jae-Hoon Park |
| author_facet | Seongyong Lee Choongjae Won Jimin Kim Jonggyu Yoo Sudong Park Jonathan Denlinger Chris Jozwiak Aaron Bostwick Eli Rotenberg Riccardo Comin Mingu Kang Jae-Hoon Park |
| author_sort | Seongyong Lee |
| collection | DOAJ |
| description | Abstract Recently, kagome lattice materials have emerged as a new model material platform for discovering and engineering novel quantum phases of matter. In this work, we elucidate the driving mechanism of the $$\sqrt{{{3}}}$$ 3 × $$\sqrt{{{3}}}$$ 3 charge order in a newly discovered kagome metal ScV6Sn6. Through multimodal investigations combining angle-resolved photoemission spectroscopy, phonon dispersion calculations, and phase diagram study, we identify the central role of unstable planar Sn and Sc phonon modes, while the electronic instability and van Hove singularities originating from the V kagome lattice have a marginal influence. Our results highlight that the $$\sqrt{{{3}}}$$ 3 × $$\sqrt{{{3}}}$$ 3 charge order in ScV6Sn6 is fundamentally distinguished from the electronically driven 2 × 2 charge order in the canonical kagome system AV3Sb5, uncovering a new mechanism to induce symmetry-breaking phase transition in kagome lattice materials. |
| first_indexed | 2024-03-07T15:22:19Z |
| format | Article |
| id | doaj.art-d1371a226e834ca39e79f24f0fa9fd0f |
| institution | Directory Open Access Journal |
| issn | 2397-4648 |
| language | English |
| last_indexed | 2024-03-07T15:22:19Z |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Materials |
| spelling | doaj.art-d1371a226e834ca39e79f24f0fa9fd0f2024-03-05T17:36:11ZengNature Portfolionpj Quantum Materials2397-46482024-01-01911810.1038/s41535-024-00620-yNature of charge density wave in kagome metal ScV6Sn6Seongyong Lee0Choongjae Won1Jimin Kim2Jonggyu Yoo3Sudong Park4Jonathan Denlinger5Chris Jozwiak6Aaron Bostwick7Eli Rotenberg8Riccardo Comin9Mingu Kang10Jae-Hoon Park11Max Planck POSTECH/Korea Research Initiative, Center for Complex Phase of MaterialsMax Planck POSTECH/Korea Research Initiative, Center for Complex Phase of MaterialsMax Planck POSTECH/Korea Research Initiative, Center for Complex Phase of MaterialsMax Planck POSTECH/Korea Research Initiative, Center for Complex Phase of MaterialsMax Planck POSTECH/Korea Research Initiative, Center for Complex Phase of MaterialsAdvanced Light Source, E. O. Lawrence Berkeley National LaboratoryAdvanced Light Source, E. O. Lawrence Berkeley National LaboratoryAdvanced Light Source, E. O. Lawrence Berkeley National LaboratoryAdvanced Light Source, E. O. Lawrence Berkeley National LaboratoryDepartment of Physics, Massachusetts Institute of TechnologyMax Planck POSTECH/Korea Research Initiative, Center for Complex Phase of MaterialsMax Planck POSTECH/Korea Research Initiative, Center for Complex Phase of MaterialsAbstract Recently, kagome lattice materials have emerged as a new model material platform for discovering and engineering novel quantum phases of matter. In this work, we elucidate the driving mechanism of the $$\sqrt{{{3}}}$$ 3 × $$\sqrt{{{3}}}$$ 3 charge order in a newly discovered kagome metal ScV6Sn6. Through multimodal investigations combining angle-resolved photoemission spectroscopy, phonon dispersion calculations, and phase diagram study, we identify the central role of unstable planar Sn and Sc phonon modes, while the electronic instability and van Hove singularities originating from the V kagome lattice have a marginal influence. Our results highlight that the $$\sqrt{{{3}}}$$ 3 × $$\sqrt{{{3}}}$$ 3 charge order in ScV6Sn6 is fundamentally distinguished from the electronically driven 2 × 2 charge order in the canonical kagome system AV3Sb5, uncovering a new mechanism to induce symmetry-breaking phase transition in kagome lattice materials.https://doi.org/10.1038/s41535-024-00620-y |
| spellingShingle | Seongyong Lee Choongjae Won Jimin Kim Jonggyu Yoo Sudong Park Jonathan Denlinger Chris Jozwiak Aaron Bostwick Eli Rotenberg Riccardo Comin Mingu Kang Jae-Hoon Park Nature of charge density wave in kagome metal ScV6Sn6 npj Quantum Materials |
| title | Nature of charge density wave in kagome metal ScV6Sn6 |
| title_full | Nature of charge density wave in kagome metal ScV6Sn6 |
| title_fullStr | Nature of charge density wave in kagome metal ScV6Sn6 |
| title_full_unstemmed | Nature of charge density wave in kagome metal ScV6Sn6 |
| title_short | Nature of charge density wave in kagome metal ScV6Sn6 |
| title_sort | nature of charge density wave in kagome metal scv6sn6 |
| url | https://doi.org/10.1038/s41535-024-00620-y |
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