Quadratic nodal line phonon with hybrid type in hexagonal compound SrCuSi
Topological phononics emerges as a new research field with the expansion of topological concept from the conventional electronic fermions. Even with a lot of common features, topological phononic states still exhibit many distinct properties. With the continuous development, the current research has...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S221137972200568X |
| _version_ | 1811204400267395072 |
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| author | Qin Kang Yunjian Chen Pengyue Shan Peng Wang Hong Cui Tie Yang |
| author_facet | Qin Kang Yunjian Chen Pengyue Shan Peng Wang Hong Cui Tie Yang |
| author_sort | Qin Kang |
| collection | DOAJ |
| description | Topological phononics emerges as a new research field with the expansion of topological concept from the conventional electronic fermions. Even with a lot of common features, topological phononic states still exhibit many distinct properties. With the continuous development, the current research has even been further extended into high order dispersion conditions. Compared with the traditional linear dispersion, high order topological elements can feature very exotic behaviors, such as high topological charge and chiral surface states, and thus have attracted a lot of research attention. In this work, based on theoretical calculation and effective model analysis, we present an ideal quadratic nodal line phonon in the hexagonal compound SrCuSi. With the symmetry enforced protection, this nodal line also shows an interesting hybrid type combination. Moreover, prominent surface states with large separation from the bulk band can be very beneficial for further experimental investigation. Our theoretical results can immediately advance the relative studies in topological phononics and, especially, the proposed material can put forward an effective way to examine the topological nodal line phonon with quadratic order or hybrid type. |
| first_indexed | 2024-04-12T03:12:36Z |
| format | Article |
| id | doaj.art-de09c1a102d24ce6ac06affaee46bb02 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-04-12T03:12:36Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-de09c1a102d24ce6ac06affaee46bb022022-12-22T03:50:19ZengElsevierResults in Physics2211-37972022-10-0141105953Quadratic nodal line phonon with hybrid type in hexagonal compound SrCuSiQin Kang0Yunjian Chen1Pengyue Shan2Peng Wang3Hong Cui4Tie Yang5School of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, ChinaSchool of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, ChinaSchool of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, ChinaSchool of Physical Science and Technology, Southwest University, Chongqing 400715, ChinaSchool of Mechanical Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Shaanxi Key Laboratory of Industrial Automation, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China; Corresponding authors.School of Physical Science and Technology, Southwest University, Chongqing 400715, China; Corresponding authors.Topological phononics emerges as a new research field with the expansion of topological concept from the conventional electronic fermions. Even with a lot of common features, topological phononic states still exhibit many distinct properties. With the continuous development, the current research has even been further extended into high order dispersion conditions. Compared with the traditional linear dispersion, high order topological elements can feature very exotic behaviors, such as high topological charge and chiral surface states, and thus have attracted a lot of research attention. In this work, based on theoretical calculation and effective model analysis, we present an ideal quadratic nodal line phonon in the hexagonal compound SrCuSi. With the symmetry enforced protection, this nodal line also shows an interesting hybrid type combination. Moreover, prominent surface states with large separation from the bulk band can be very beneficial for further experimental investigation. Our theoretical results can immediately advance the relative studies in topological phononics and, especially, the proposed material can put forward an effective way to examine the topological nodal line phonon with quadratic order or hybrid type.http://www.sciencedirect.com/science/article/pii/S221137972200568XNodal line stateTopological phononFirst principles calculationTopological materialDensity functional theory |
| spellingShingle | Qin Kang Yunjian Chen Pengyue Shan Peng Wang Hong Cui Tie Yang Quadratic nodal line phonon with hybrid type in hexagonal compound SrCuSi Results in Physics Nodal line state Topological phonon First principles calculation Topological material Density functional theory |
| title | Quadratic nodal line phonon with hybrid type in hexagonal compound SrCuSi |
| title_full | Quadratic nodal line phonon with hybrid type in hexagonal compound SrCuSi |
| title_fullStr | Quadratic nodal line phonon with hybrid type in hexagonal compound SrCuSi |
| title_full_unstemmed | Quadratic nodal line phonon with hybrid type in hexagonal compound SrCuSi |
| title_short | Quadratic nodal line phonon with hybrid type in hexagonal compound SrCuSi |
| title_sort | quadratic nodal line phonon with hybrid type in hexagonal compound srcusi |
| topic | Nodal line state Topological phonon First principles calculation Topological material Density functional theory |
| url | http://www.sciencedirect.com/science/article/pii/S221137972200568X |
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