Merohedral disorder and impurity impacts on superconductivity of fullerenes

Wang，Shu Ze1; Ren，Ming Qiang1; Han，Sha1; Cheng，Fang Jun1; Ma，Xu Cun1,2; Xue，Qi Kun1,2,3,4; Song，Can Li1,2

2021-12-01

10.1038/s42005-021-00619-y

Communications Physics   影响因子和分区

2399-3650

Local quasiparticle states around impurities provide essential insight into the mechanism of unconventional superconductivity, especially when the candidate materials are proximate to an antiferromagnetic Mott-insulating phase. While such states have been reported in atom-based cuprates and iron-based compounds, they are unexplored in organic superconductors which feature tunable molecular orientation. Here we employ scanning tunneling microscopy and spectroscopy to reveal multiple forms of robustness of an exotic s-wave superconductivity in epitaxial RbC films against merohedral disorder, non-magnetic single impurities and step edges at the atomic scale. Yu-Shiba-Rusinov (YSR) states, induced by deliberately incurred Fe adatoms that act as magnetic scatterers, have also been observed. The YSR bound states show abrupt spatial decay and vary in energy with the Fe adatom registry. These results and a doping-dependent study of superconductivity point towards local electron pairing in which the multiorbital electronic correlations and intramolecular phonons together drive the high-temperature superconductivity of doped fullerenes.

SCI ; EI

英语

其他

WOS:000660876100002

20212310458384

Adatoms ; Antiferromagnetic materials ; Copper compounds ; Fullerenes ; Impurities ; Molecular orientation ; Organic superconducting materials ; Rubidium compounds ; Scanning tunneling microscopy ; Semiconductor doping ; Shear waves

Superconducting Materials:708.3 ; Magnetic Materials:708.4 ; Semiconducting Materials:712.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Mechanics:931.1 ; Materials Science:951

2-s2.0-85107141048

Scopus

1.State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing,China
2.Frontier Science Center for Quantum Information,Beijing,China
3.Beijing Academy of Quantum Information Sciences,Beijing,China
4.Southern University of Science and Technology,Shenzhen,China

Wang，Shu Ze,Ren，Ming Qiang,Han，Sha,et al. Merohedral disorder and impurity impacts on superconductivity of fullerenes[J]. Communications Physics,2021,4(1).

Wang，Shu Ze.,Ren，Ming Qiang.,Han，Sha.,Cheng，Fang Jun.,Ma，Xu Cun.,...&Song，Can Li.(2021).Merohedral disorder and impurity impacts on superconductivity of fullerenes.Communications Physics,4(1).

Wang，Shu Ze,et al."Merohedral disorder and impurity impacts on superconductivity of fullerenes".Communications Physics 4.1(2021).