典型文献
NMR Evidence for Universal Pseudogap Behavior in Quasi-Two-Dimensional FeSe-Based Superconductors
文献摘要：
Recently,by intercalating organic ions into bulk FeSe superconductors,two kinds of layered FeSe-based su-perconductors[(TBA)xFeSe and(CTA)xFeSe]with superconducting transition temperatures(Tc)above 40 K have been discovered.Due to the large interlayer distance(～15?),these new layered superconductors have a large resistivity anisotropy analogous to bismuth-based cuprate superconductors.Moreover,remarkable pseu-dogap behavior well above Tc is revealed by nuclear magnetic resonance(NMR)measurements on 77 Se nu-clei,suggesting a preformed pairing scenario similar to that of cuprates.Here,we report another new kind of organic-ion-intercalated FeSe superconductor,(PY)xFeSe,with a reduced interlayer distance(～10 ?)compared to(TBA)xFeSe and(CTA)xFeSe.By performing 77Se NMR and transport measurements,we observe a simi-lar pseudogap behavior well above Tc of～40K and a large resistivity anisotropy of～104 in(PY)xFeSe.All these facts strongly support a universal pseudogap behavior in these layered FeSe-based superconductors with quasi-two-dimensional electronic structures.
文献关键词：
中图分类号：
作者姓名：
B.L.Kang;M.Z.Shi;D.Zhao;S.J.Li;J.Li;L.X.Zheng;D.W.Song;L.P.Nie;T.Wu;X.H.Chen
作者机构：
Hefei National Research Center for Physical Sciences at the Microscale,University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Strongly coupled Quantum Matter Physics,Department of Physics,University of Science and Technology of China,Hefei 230026,China;CAS Center for Excellence in Superconducting Electronics(CENSE),Shanghai 200050,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing University,Nanjing 210093,China;Hefei National Laboratory,University of Science and Technology of China,Hefei 230088,China
文献出处：
引用格式：
[1]B.L.Kang;M.Z.Shi;D.Zhao;S.J.Li;J.Li;L.X.Zheng;D.W.Song;L.P.Nie;T.Wu;X.H.Chen-.NMR Evidence for Universal Pseudogap Behavior in Quasi-Two-Dimensional FeSe-Based Superconductors)[J].中国物理快报（英文版）,2022(12):71-76
A类：
Pseudogap,Superconductors,perconductors,xFeSe,dogap,clei,cuprates,77Se
B类：
NMR,Evidence,Universal,Behavior,Quasi,Two,Dimensional,Based,Recently,by,intercalating,organic,ions,into,bulk,superconductors,two,kinds,layered,TBA,CTA,superconducting,transition,temperatures,Tc,above,have,been,discovered,Due,large,interlayer,distance,these,new,resistivity,anisotropy,analogous,bismuth,Moreover,remarkable,behavior,well,revealed,nuclear,magnetic,resonance,measurements,suggesting,preformed,pairing,scenario,similar,that,Here,report,another,intercalated,PY,reduced,compared,By,performing,transport,observe,pseudogap,40K,All,facts,strongly,support,universal,quasi,dimensional,electronic,structures
AB值：
0.450795
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