| Nontrivial Topological States in BaSn5 Superconductor Probed by de Haas–van Alphen Quantum Oscillations |
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| 引用本文： | 韩李雪松,石贤彪,焦金龙,于振海,王霞,余娜,邹志强,马杰,赵维巍,夏威,郭艳峰.Nontrivial Topological States in BaSn5 Superconductor Probed by de Haas–van Alphen Quantum Oscillations[J].中国物理快报,2022(6):40-46. |
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| 作者姓名： | 韩李雪松 石贤彪 焦金龙 于振海 王霞 余娜 邹志强 马杰 赵维巍 夏威 郭艳峰 |
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| 作者单位： | 1. School of Physical Science and Technology, Shanghai Tech University;2. State Key Laboratory of Advanced Welding & Joining and Flexible Printed Electronics Technology Center, Harbin Institute of Technology;3. Shenzhen Key Laboratory of Flexible Printed Electronics Techniology, Harbin Institute of Technology;4. Key Laboratory of Artificial Structures and Quantum Control (Ministry of Education), School of Physics and Astronomy, Shanghai Jiao Tong University;5. Analytical Instrumentation Center, School of Physical Science and Technology, Shanghai Tech University;6. Shanghai Tech Laboratory for Topological Physics, Shanghai Tech University |
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| 摘 要： | We report the nontrivial topological states in an intrinsic type-Ⅱ superconductor BaSn5（Tc～4.4 K） probed by measuring the magnetization, specific heat, de Haas–van Alphen（d Hv A） effect, and by performing first-principles calculations. The first-principles calculations reveal a topological nodal ring structure centered at the H point in the kz = π plane of the Brillouin zone, which could be gapped by spin-orbit coupling（SOC）, yielding relatively small gaps below ...
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