Giant phonon anomaly in topological nodal-line semimetals
The band topology has been revealed to bring a wide array of novel electronic transport phenomena, but its interaction with phonon properties remains largely unexplored. Here we propose that continuous topological singularities with variable Fermi wave vectors can lead to giant effects on phonon tra...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co. Ltd.
2025-01-01
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| Series: | Fundamental Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667325822004642 |
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| _version_ | 1832583011547217920 |
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| author | Zizhen Zhou Xiaolong Yang Honghui Wang Guang Han Xu Lu Guoyu Wang Rui Wang Xiaoyuan Zhou |
| author_facet | Zizhen Zhou Xiaolong Yang Honghui Wang Guang Han Xu Lu Guoyu Wang Rui Wang Xiaoyuan Zhou |
| author_sort | Zizhen Zhou |
| collection | DOAJ |
| description | The band topology has been revealed to bring a wide array of novel electronic transport phenomena, but its interaction with phonon properties remains largely unexplored. Here we propose that continuous topological singularities with variable Fermi wave vectors can lead to giant effects on phonon transport in nodal-line semimetals. Using first-principles calculations, we show that such an exotic feature is present in a well-known topological semimetal ZrSiSe, in which the unique nodal-line can guarantee considerable momentum-continuous phonons to satisfy the stringent condition of Kohn anomaly and thereby dramatically strengthen the electron-phonon coupling. Moreover, the momentum-continuous anomaly phonons with eight arms of vertical Fermi surface drive intense phonon-electron scattering that is even comparable with intrinsic phonon-phonon scattering, giving rise to a reduction of ∼45% on room temperature lattice thermal conductivity. Our findings not only uncover giant phonon anomaly in topological nodal-line semimetals but also provide guidance for exploring the vital influence of electronic band topology on thermal transport bridged by the electron-phonon coupling. |
| format | Article |
| id | doaj-art-3a851d8856ef4995baede8c2ff81d799 |
| institution | Kabale University |
| issn | 2667-3258 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Fundamental Research |
| spelling | doaj-art-3a851d8856ef4995baede8c2ff81d7992025-01-29T05:02:30ZengKeAi Communications Co. Ltd.Fundamental Research2667-32582025-01-0151145150Giant phonon anomaly in topological nodal-line semimetalsZizhen Zhou0Xiaolong Yang1Honghui Wang2Guang Han3Xu Lu4Guoyu Wang5Rui Wang6Xiaoyuan Zhou7Center of Quantum Materials and Devices, College of Physics, Chongqing University, Chongqing 401331, ChinaCenter of Quantum Materials and Devices, College of Physics, Chongqing University, Chongqing 401331, ChinaCenter of Quantum Materials and Devices, College of Physics, Chongqing University, Chongqing 401331, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, ChinaCenter of Quantum Materials and Devices, College of Physics, Chongqing University, Chongqing 401331, ChinaCollege of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Corresponding authors.Center of Quantum Materials and Devices, College of Physics, Chongqing University, Chongqing 401331, China; Corresponding authors.Center of Quantum Materials and Devices, College of Physics, Chongqing University, Chongqing 401331, China; Corresponding authors.The band topology has been revealed to bring a wide array of novel electronic transport phenomena, but its interaction with phonon properties remains largely unexplored. Here we propose that continuous topological singularities with variable Fermi wave vectors can lead to giant effects on phonon transport in nodal-line semimetals. Using first-principles calculations, we show that such an exotic feature is present in a well-known topological semimetal ZrSiSe, in which the unique nodal-line can guarantee considerable momentum-continuous phonons to satisfy the stringent condition of Kohn anomaly and thereby dramatically strengthen the electron-phonon coupling. Moreover, the momentum-continuous anomaly phonons with eight arms of vertical Fermi surface drive intense phonon-electron scattering that is even comparable with intrinsic phonon-phonon scattering, giving rise to a reduction of ∼45% on room temperature lattice thermal conductivity. Our findings not only uncover giant phonon anomaly in topological nodal-line semimetals but also provide guidance for exploring the vital influence of electronic band topology on thermal transport bridged by the electron-phonon coupling.http://www.sciencedirect.com/science/article/pii/S2667325822004642Kohn anomalyNodal-line semimetalElectron-phonon couplingPhonon transportFirst-principles |
| spellingShingle | Zizhen Zhou Xiaolong Yang Honghui Wang Guang Han Xu Lu Guoyu Wang Rui Wang Xiaoyuan Zhou Giant phonon anomaly in topological nodal-line semimetals Fundamental Research Kohn anomaly Nodal-line semimetal Electron-phonon coupling Phonon transport First-principles |
| title | Giant phonon anomaly in topological nodal-line semimetals |
| title_full | Giant phonon anomaly in topological nodal-line semimetals |
| title_fullStr | Giant phonon anomaly in topological nodal-line semimetals |
| title_full_unstemmed | Giant phonon anomaly in topological nodal-line semimetals |
| title_short | Giant phonon anomaly in topological nodal-line semimetals |
| title_sort | giant phonon anomaly in topological nodal line semimetals |
| topic | Kohn anomaly Nodal-line semimetal Electron-phonon coupling Phonon transport First-principles |
| url | http://www.sciencedirect.com/science/article/pii/S2667325822004642 |
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