典型文献
Josephson vortices and intrinsic Josephson junctions in the layered iron-based superconductor Ca10(Pt3As8)((Fe0.9Pt0.1)2As2)5
文献摘要：
Modulated electronic state due to the layered crystal structures brings about moderate anisotropy of superconductivity in the iron-based superconductors and thus Abrikosov vortices are expected in the mixed state.However,based on the angular and temperature dependent transport measurements in iron-based superconductor Ca10(Pt3As8)((Fe0.9Pt0.1)2As2)5 with Tc(≌)12 K,we find clear evidences of a crossover from Abrikosov vortices to Josephson vortices at a crossover temperature T*(≌)7 K,when the applied magnetic field is parallel to the superconducting FeAs layers,i.e.,the angle between the magnetic field and the FeAs layers θ=0°.This crossover to Josephson vortices is demonstrated by an abnormal decrease(increase)of the critical current(flux-flow resistance)below T*,in contrast to the increase(decrease)of the critical current(flux-flow resistance)above T* expected for Abrikosov vortices.Furthermore,when θ is larger than 0.5°,the flux-flow resistance and critical current have no anomalous behaviors across T*.These anomalous behaviors can be understood in terms of the distinct transition from the well-pinned Abrikosov vortices to the weakly-pinned Josephson vortices upon cooling,when the coherent length perpendicular to the FeAs layers ξ⊥ becomes shorter than half of the interlayer distance d/2.These experimental findings indicate the existence of intrinsic Josephson junctions below T* and thus quasi-two-dimensional superconductivity in Ca10(Pt3As8)((Fe0.9Pt0.1)2As2)5,similar to those in the cuprate superconductors.
文献关键词：
中图分类号：
作者姓名：
Qiang-Tao Sui;Xiang-Gang Qui
作者机构：
Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Songshan Lake Materials Laboratory,Dongguan 523808,China
文献出处：
引用格式：
[1]Qiang-Tao Sui;Xiang-Gang Qui-.Josephson vortices and intrinsic Josephson junctions in the layered iron-based superconductor Ca10(Pt3As8)((Fe0.9Pt0.1)2As2)5)[J].中国物理B（英文版）,2022(09):139-144
A类：
Pt3As8,9Pt0,2As2,Abrikosov
B类：
Josephson,vortices,intrinsic,junctions,layered,iron,Ca10,Fe0,Modulated,electronic,state,due,crystal,structures,brings,about,moderate,anisotropy,superconductivity,superconductors,thus,are,expected,mixed,However,angular,temperature,dependent,transport,measurements,Tc,clear,evidences,crossover,from,when,applied,magnetic,field,parallel,superconducting,FeAs,layers,angle,between,This,demonstrated,by,abnormal,decrease,increase,critical,current,flux,flow,resistance,below,contrast,above,Furthermore,larger,than,have,anomalous,behaviors,across,These,can,understood,terms,distinct,transition,well,pinned,weakly,upon,cooling,coherent,length,perpendicular,becomes,shorter,half,interlayer,distance,experimental,findings,indicate,existence,quasi,two,dimensional,similar,those,cuprate
AB值：
0.426323
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