典型文献
Direct observation of nodeless superconductivity and phonon modes in electron-doped copper oxide Sr1-xNdxCuO2
文献摘要：
The microscopic understanding of high-temperature superconductivity in cuprates has been hindered by the apparent complexity of crystal structures in these materials.We used scanning tunneling microscopy and spectroscopy to study the electron-doped copper oxide compound Sr1-xNdxCuO2,which has only bare cations separating the CuO2 planes and thus the simplest infinite-layer structure of all cuprate superconductors.Tunneling conductance spectra of the major CuO2 planes in the superconducting state revealed direct evidence for a nodeless pairing gap,regardless of variation of its magnitude with the local doping of trivalent neodymium.Furthermore,three distinct bosonic modes are observed as multiple peak-dip-hump features outside the superconducting gaps and their respective energies depend little on the spatially varying gaps.As well as the bosonic modes,with energies identical to those of the external,bending and stretching phonons of copper oxides,our findings reveal the origin of the bosonic modes in lattice vibrations rather than spin excitations.
文献关键词：
中图分类号：
作者姓名：
Jia-Qi Fan;Xue-Qing Yu;Fang-Jun Cheng;Heng Wang;Ruifeng Wang;Xiaobing Ma;Xiao-Peng Hu;Ding Zhang;Xu-Cun Ma;Qi-Kun Xue;Can-Li Song
作者机构：
State Key Laboratory of Low-Dimensional Quantum Physics,Department of Physics,Tsinghua University,Beijing 100084,China;Frontier Science Center for Quantum Information,Beijing 100084,China;Beijing Academy of Quantum Information Sciences,Beijing 100193,China;RIKEN Center for Emergent Matter Science(CEMS),Wako,Saitama 351-0198,Japan;Southern University of Science and Technology,Shenzhen 518055,China
文献出处：
引用格式：
[1]Jia-Qi Fan;Xue-Qing Yu;Fang-Jun Cheng;Heng Wang;Ruifeng Wang;Xiaobing Ma;Xiao-Peng Hu;Ding Zhang;Xu-Cun Ma;Qi-Kun Xue;Can-Li Song-.Direct observation of nodeless superconductivity and phonon modes in electron-doped copper oxide Sr1-xNdxCuO2)[J].国家科学评论（英文版）,2022(04):71-78
A类：
nodeless,xNdxCuO2,cuprates,CuO2
B类：
Direct,observation,superconductivity,modes,electron,doped,copper,Sr1,microscopic,understanding,high,temperature,has,been,hindered,by,apparent,complexity,crystal,structures,these,materials,We,used,scanning,tunneling,microscopy,spectroscopy,study,compound,which,only,bare,cations,separating,planes,thus,simplest,infinite,layer,superconductors,Tunneling,conductance,spectra,major,superconducting,state,revealed,direct,evidence,pairing,regardless,variation,its,magnitude,local,doping,trivalent,neodymium,Furthermore,three,distinct,bosonic,observed,multiple,peak,dip,hump,features,outside,gaps,their,respective,energies,depend,little,spatially,varying,well,identical,those,external,bending,stretching,phonons,oxides,our,findings,origin,lattice,vibrations,rather,than,spin,excitations
AB值：
0.617243
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
