Observation of pseudogap in SnSe(2)atomic layers grown on graphite
Mao, Ya-Hui1,2; Shan, Huan1,2; Wu, Jin-Rong1,2; Li, Ze-Jun1,2; Wu, Chang-Zheng1,2; Zhai, Xiao-Fang1,2,3; Zhao, Ai-Di1,2,3; Wang, Bing1,2
2020-07-21
发表期刊FRONTIERS OF PHYSICS
ISSN2095-0462
EISSN2095-0470
卷号15期号:4
发表状态已发表
DOI10.1007/s11467-020-0977-1
摘要Superconducting metal dichalcogenides (MDCs) present several similarities to the other layered superconductors like cuprates. The superconductivity in atomically thin MDCs has been demonstrated by recent experiments, however, the investigation of the superconductivity intertwined with other orders are scarce. Investigating the pseudogap in atomic layers of MDCs may help to understand the superconducting mechanism for these true two-dimensional (2D) superconducting systems. Herein we report a pseudogap opening in the tunneling spectra of thin layers of SnSe(2)epitaxially grown on highly oriented pyrolytic graphite (HOPG) with scanning tunneling microscopy/spectroscopy (STM/STS). A significant V-shaped pseudogap was observed to open near the Fermi level (E-F) in the STS. And at elevated temperatures, the gap gradually evolves to a shallow dip. Our experimental observations provide direct evidence of a pseudogap state in the electron-doped SnSe(2)atomic layers on the HOPG surface, which may stimulate further exploration of the mechanism of superconductivity at 2D limit in MDCs.
关键词scanning tunneling microscopy pseudogap metal dichalcogenides SnSe2 van der Waals epitaxy
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收录类别SCI ; SCIE
语种英语
资助项目National Key R&D Program of China[2016YFA0200603][2017YFA0205004] ; "Strategic Priority Research Program" of CAS[XDB01020100] ; National Natural Science Foundation of China[91321309][21421063][21473174] ; Fundamental Research Funds for the Central Science Advances Universities[WK2060190027][WK2060190084] ; Youth Innovation Promotion Association of CAS[2011322]
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000553578900001
出版者HIGHER EDUCATION PRESS
WOS关键词CHARGE-DENSITY-WAVE ; SCANNING TUNNELING SPECTROSCOPY ; SUPERCONDUCTIVITY ; TRANSITION
原始文献类型Article
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/122956
专题物质科学与技术学院_PI研究组_翟晓芳组
物质科学与技术学院_PI研究组_赵爱迪组
通讯作者Zhao, Ai-Di
作者单位1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China
2.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, Hefei 230026, Peoples R China
3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
通讯作者单位物质科学与技术学院
推荐引用方式
GB/T 7714
Mao, Ya-Hui,Shan, Huan,Wu, Jin-Rong,et al. Observation of pseudogap in SnSe(2)atomic layers grown on graphite[J]. FRONTIERS OF PHYSICS,2020,15(4).
APA Mao, Ya-Hui.,Shan, Huan.,Wu, Jin-Rong.,Li, Ze-Jun.,Wu, Chang-Zheng.,...&Wang, Bing.(2020).Observation of pseudogap in SnSe(2)atomic layers grown on graphite.FRONTIERS OF PHYSICS,15(4).
MLA Mao, Ya-Hui,et al."Observation of pseudogap in SnSe(2)atomic layers grown on graphite".FRONTIERS OF PHYSICS 15.4(2020).
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