Topological Phase Transition in Layered XIn$_2$P$_2$ (X = Ca, Sr)
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
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2017
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| _version_ | 1866911244310544384 |
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| author | Wang, Zhenwei Wang, Guangtao Shi, Xianbiao Wang, Dongyang Tian, Xin |
| author_facet | Wang, Zhenwei Wang, Guangtao Shi, Xianbiao Wang, Dongyang Tian, Xin |
| contents | Based on fully relativistic first-principles calculations, we studied the topological properties of layered XIn$_2$P$_2$ (X = Ca, Sr). Band inversion can be induced by strain without SOC, forming one nodal ring in the k$_z$ = 0 plane, which is protected by the coexistence of time-reversal and mirror-reflection symmetry. Including SOC, a substantial band gap is opened along the nodal line and the line-node semimetal would evolve into a topological insulator. These results reveal a category of materials showing quantum phase transition from trivial semiconductor and topologically nontrivial insulator by the tuneable elastic strain engineering. Our investigations provide a new perspective about the formation of topological line-node semimetal under stain. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1706_03970 |
| institution | arXiv |
| publishDate | 2017 |
| record_format | arxiv |
| spellingShingle | Topological Phase Transition in Layered XIn$_2$P$_2$ (X = Ca, Sr) Wang, Zhenwei Wang, Guangtao Shi, Xianbiao Wang, Dongyang Tian, Xin Materials Science Based on fully relativistic first-principles calculations, we studied the topological properties of layered XIn$_2$P$_2$ (X = Ca, Sr). Band inversion can be induced by strain without SOC, forming one nodal ring in the k$_z$ = 0 plane, which is protected by the coexistence of time-reversal and mirror-reflection symmetry. Including SOC, a substantial band gap is opened along the nodal line and the line-node semimetal would evolve into a topological insulator. These results reveal a category of materials showing quantum phase transition from trivial semiconductor and topologically nontrivial insulator by the tuneable elastic strain engineering. Our investigations provide a new perspective about the formation of topological line-node semimetal under stain. |
| title | Topological Phase Transition in Layered XIn$_2$P$_2$ (X = Ca, Sr) |
| topic | Materials Science |
| url | https://arxiv.org/abs/1706.03970 |