典型文献
Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor
文献摘要：
Realization of Kondo lattice in superconducting van der Waals materials not only provides a unique opportu-nity for tuning the Kondo lattice behavior by electrical gating or intercalation,but also is helpful for further understanding the heavy fermion superconductivity.Here we report a low-temperature and vector-magnetic-field scanning tunneling microscopy and spectroscopy study on a superconducting compound(4Hb-TaS2)with alternate stacking of 1T-TaS2 and 1H-TaS2 layers.We observe the quasi-two-dimensional superconductivity in the 1H-TaS2 layer with anisotropic response to the in-plane and out-of-plane magnetic fields.In the 1T-TaS2 layer,we detect the Kondo resonance peak that results from the Kondo screening of the unpaired electrons in the Star-of-David clusters.We also find that the intensity of the Kondo resonance peak is sensitive to its relative position with the Fermi level,and it can be significantly enhanced when it is further shifted towards the Fermi level by evaporating Pb atoms onto the 1T-TaS2 surface.Our results not only are important for fully under-standing the electronic properties of 4Hb-TaS2,but also pave the way for creating tunable Kondo lattice in the superconducting van der Waals materials.
文献关键词：
中图分类号：
作者姓名：
Shiwei Shen;Tian Qin;Jingjing Gao;Chenhaoping Wen;Jinghui Wang;Wei Wang;Jun Li;Xuan Luo;Wenjian Lu;Yuping Sun;Shichao Yan
作者机构：
School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;Key Laboratory of Materials Physics,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China;ShanghaiTech Laboratory for Topological Physics,ShanghaiTech University,Shanghai 201210,China;High Magnetic Field Laboratory,HFIPS,Chinese Academy of Sciences,Hefei 230031,China;Collaborative Innovation Centre of Advanced Microstructures,Nanjing University,Nanjing 210093,China
文献出处：
引用格式：
[1]Shiwei Shen;Tian Qin;Jingjing Gao;Chenhaoping Wen;Jinghui Wang;Wei Wang;Jun Li;Xuan Luo;Wenjian Lu;Yuping Sun;Shichao Yan-.Coexistence of Quasi-two-dimensional Superconductivity and Tunable Kondo Lattice in a van der Waals Superconductor)[J].中国物理快报（英文版）,2022(07):101-113
A类：
Superconductor,4Hb,evaporating
B类：
Coexistence,Quasi,two,dimensional,Superconductivity,Tunable,Kondo,Lattice,van,Waals,Realization,lattice,superconducting,materials,not,only,provides,unique,opportu,nity,tuning,behavior,by,electrical,gating,intercalation,but,also,helpful,further,understanding,heavy,fermion,superconductivity,Here,we,report,low,temperature,vector,magnetic,scanning,tunneling,microscopy,spectroscopy,study,compound,TaS2,alternate,stacking,1T,1H,layers,We,observe,quasi,anisotropic,response,plane,out,fields,In,detect,resonance,peak,that,results,from,screening,unpaired,electrons,Star,David,clusters,find,intensity,sensitive,its,relative,position,Fermi,level,significantly,enhanced,when,shifted,towards,Pb,atoms,onto,surface,Our,are,important,fully,electronic,properties,pave,way,creating,tunable
AB值：
0.520012
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