| Tri-hexagonal charge order in kagome metal CsV3Sb5 revealed by (121)Sb nuclear quadrupole resonance |
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| 作者姓名： | 牟超 殷蔷薇 涂志俊 龚春生 郑萍 雷和畅 李政 雒建林 |
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| 作者单位： | 1.Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;2.School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;3.Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices, Renmin University of China, Beijing 100872, China;4.Songshan Lake Materials Laboratory, Dongguan 523808, China |
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| 基金项目： | the National Key Research and Development Program of China(Grant Nos.2017YFA0302901,2018YFA0305702,2018YFE0202600,and 2016YFA0300504);the National Natural Science Foundation of China(Grant Nos.12134018,11921004,11822412,and 11774423);the Beijing Natural Science Foundation,China(Grant No.Z200005);the Strategic Priority Research Program and Key Research Program of Frontier Sciences of the Chinese Academy of Sciences(Grant No.XDB33010100)。 |
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| 摘 要： | We report 121Sb nuclear quadrupole resonance(NQR)measurements on kagome superconductor CsV3Sb5 with Tc=2.5 K.121Sb NQR spectra split after a charge density wave(CDW)transition at 94 K,which demonstrates a commensurate CDW state.The coexistence of the high temperature phase and the CDW phase between 91 K and 94 K manifests that it is a first order phase transition.The CDW order exhibits tri-hexagonal deformation with a lateral shift between the adjacent kagome layers,which is consistent with 2×2×2 superlattice modulation.The superconducting state coexists with CDW order and shows a conventional s-wave behavior in the bulk state.
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| 关 键 词： | charge-density-wave systems nuclear magnetic resonance |
| 收稿时间： | 2021-10-25 |
Tri-hexagonal charge order in kagome metal CsV3Sb5 revealed by 121Sb nuclear quadrupole resonance |
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| Chao Mu,Qiangwei Yin,Zhijun Tu,Chunsheng Gong,Ping Zheng,Hechang Lei,Zheng Li,Jianlin Luo.Tri-hexagonal charge order in kagome metal CsV3Sb5 revealed by (121)Sb nuclear quadrupole resonance[J].Chinese Physics B,2022,31(1):17105-017105. |
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| Authors: | Chao Mu Qiangwei Yin Zhijun Tu Chunsheng Gong Ping Zheng Hechang Lei Zheng Li Jianlin Luo |
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| Affiliation: | 1.Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;2.School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China;3.Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices, Renmin University of China, Beijing 100872, China;4.Songshan Lake Materials Laboratory, Dongguan 523808, China |
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| Abstract: | We report 121Sb nuclear quadrupole resonance (NQR) measurements on kagome superconductor CsV3Sb5 with Tc=2.5 K. 121Sb NQR spectra split after a charge density wave (CDW) transition at 94 K, which demonstrates a commensurate CDW state. The coexistence of the high temperature phase and the CDW phase between 91 K and 94 K manifests that it is a first order phase transition. The CDW order exhibits tri-hexagonal deformation with a lateral shift between the adjacent kagome layers, which is consistent with 2×2×2 superlattice modulation. The superconducting state coexists with CDW order and shows a conventional s-wave behavior in the bulk state. |
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| Keywords: | charge-density-wave systems nuclear magnetic resonance |
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