Pressure-induced redistribution in density of states and reemergence of superconductivity in AgSnSe2
Summary: The intricate relationship between superconductivity and disorder is a captivating subject within condensed matter physics. Strong disorder suppresses superconductivity and induces a superconductor-insulator transition. However, below a certain critical degree of disorder, the superconducti...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-05-01
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| Series: | iScience |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004225007035 |
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| author | Cuiying Pei Juefei Wu Weizheng Cao Yuyang Jiang Qi Wang Yi Zhao Junjie Wang Tianping Ying Yanpeng Qi |
| author_facet | Cuiying Pei Juefei Wu Weizheng Cao Yuyang Jiang Qi Wang Yi Zhao Junjie Wang Tianping Ying Yanpeng Qi |
| author_sort | Cuiying Pei |
| collection | DOAJ |
| description | Summary: The intricate relationship between superconductivity and disorder is a captivating subject within condensed matter physics. Strong disorder suppresses superconductivity and induces a superconductor-insulator transition. However, below a certain critical degree of disorder, the superconductivity critical temperature (Tc) can be enhanced. Herein, we present evidence of pressure-induced reemergence of superconductivity in a strongly disordered 3D superconductor AgSnSe2. A structural phase transition from NaCl- to CsCl-type structure occurs, coinciding with the emergence of the second superconducting state. First-principles calculations suggest that the partial density of states in Se atoms exhibits a sharp elevation around the transition pressure, which is related to the secondary superconducting state. Our study illustrates AgSnSe2 as a promising platform to explore the comprehensive effects among disorder, high pressure, and superconductivity, offering insights for subsequent experimental and theoretical studies. |
| format | Article |
| id | doaj-art-aefdd6ef81bb433ca91cfbb8b215fe77 |
| institution | DOAJ |
| issn | 2589-0042 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj-art-aefdd6ef81bb433ca91cfbb8b215fe772025-08-20T02:56:33ZengElsevieriScience2589-00422025-05-0128511244210.1016/j.isci.2025.112442Pressure-induced redistribution in density of states and reemergence of superconductivity in AgSnSe2Cuiying Pei0Juefei Wu1Weizheng Cao2Yuyang Jiang3Qi Wang4Yi Zhao5Junjie Wang6Tianping Ying7Yanpeng Qi8School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China; ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, ChinaSchool of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China; ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai 201210, China; Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, China; Corresponding authorSummary: The intricate relationship between superconductivity and disorder is a captivating subject within condensed matter physics. Strong disorder suppresses superconductivity and induces a superconductor-insulator transition. However, below a certain critical degree of disorder, the superconductivity critical temperature (Tc) can be enhanced. Herein, we present evidence of pressure-induced reemergence of superconductivity in a strongly disordered 3D superconductor AgSnSe2. A structural phase transition from NaCl- to CsCl-type structure occurs, coinciding with the emergence of the second superconducting state. First-principles calculations suggest that the partial density of states in Se atoms exhibits a sharp elevation around the transition pressure, which is related to the secondary superconducting state. Our study illustrates AgSnSe2 as a promising platform to explore the comprehensive effects among disorder, high pressure, and superconductivity, offering insights for subsequent experimental and theoretical studies.http://www.sciencedirect.com/science/article/pii/S2589004225007035Natural sciencesPhysicsCondensed matter physics |
| spellingShingle | Cuiying Pei Juefei Wu Weizheng Cao Yuyang Jiang Qi Wang Yi Zhao Junjie Wang Tianping Ying Yanpeng Qi Pressure-induced redistribution in density of states and reemergence of superconductivity in AgSnSe2 iScience Natural sciences Physics Condensed matter physics |
| title | Pressure-induced redistribution in density of states and reemergence of superconductivity in AgSnSe2 |
| title_full | Pressure-induced redistribution in density of states and reemergence of superconductivity in AgSnSe2 |
| title_fullStr | Pressure-induced redistribution in density of states and reemergence of superconductivity in AgSnSe2 |
| title_full_unstemmed | Pressure-induced redistribution in density of states and reemergence of superconductivity in AgSnSe2 |
| title_short | Pressure-induced redistribution in density of states and reemergence of superconductivity in AgSnSe2 |
| title_sort | pressure induced redistribution in density of states and reemergence of superconductivity in agsnse2 |
| topic | Natural sciences Physics Condensed matter physics |
| url | http://www.sciencedirect.com/science/article/pii/S2589004225007035 |
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