Unconventional high temperature superconductivity in cubic zinc-blende transition metal compounds  

作　　者：Qiang Zhang Kun Jiang YuHao Gu JiangPing Hu 

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]Department of Physics,Boston College,Chestnut Hill,MA 02467,USA [3]Beijing National Laboratory for Molecular Sciences,State Key Laboratory of Rare Earth Materials Chemistry and Applications,Institute of Theoretical and Computational Chemistry,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China [4]Kavli Institute of Theoretical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2020年第7期104-108,共5页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the International Young Scientist Fellowship of Institute of Physics, Chinese Academy Sciences (Grant No. 2017002);the Strategic Priority Research Program of Chinese Academy Sciences (Grant No. XDB07000000);the Postdoctoral International Program from China Postdoctoral Science Foundation (Grant No. Y8BK131T61);supported by the High-performance Computing Platform of Peking University;supported by the National Basic Research Program of China (Grant Nos. 2015CB921300, and 2017YFA0303100);the National Natural Science Foundation of China (Grant No. NSFC-11334012)

摘　　要：We consider possible high temperature superconductivity(high-Tc)in transition metal compounds with a cubic zinc-blende lattice structure.When the electron filling configuration in the d-shell is close to d7,all three t2g orbitals are near half filling with strong nearest neighbor antiferromagnetic(AFM)superexchange interactions.We argue that upon doping,this electronic environment can be one of"genes"to host unconventional high Tcwith a time reversal symmetry broken d2x2-x2-y2±idx2-y2pairing symmetry.With gapless nodal points along the diagonal directions,this state is a direct three-dimensional analogue to the two-dimensional B1gd-wave state in cuprates.We suggest that such a case may be realized in electron doped CoN,such as CoN1-xOx and(H,Li)1-xCoN.

关 键 词：high temperature superconductivity zinc-blende structure three-dimensional d+id wave 

分 类 号：O641.1[理学—物理化学] TQ132.4[理学—化学]