Theory for superconductivity in alkali chromium arsenides A2Cr3As3 (A = K, Rb, Cs)  

作　　者：Yi Zhou Chao Cao Fu-Chun Zhang 

机构地区：[1]Department of Physics, Zhejiang University, Hangzhou 310027, China [2]Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China [3]Department of Physics, Hangzhou Normal University, Hangzhou 310036, China

出　　处：《Science Bulletin》2017年第3期208-211,共4页科学通报（英文版）

基　　金：supported in part by the National Key R&D Program of China (2016YFA0300202);the National Basic Research Program of China (2014CB921201 and 2014CB921203);the National Natural Science Foundation of China (11374256, 11274269 and 11274006);the Natural Science Foundation of Zhejiang Province (LR12A04003)

摘　　要：Recently,CrAs based superconductors have attracted much attention.CrAs itself is a 3D antiferromagnet(AFM),which becomes superconducting(SC)under modest pressure with T_C^2 K[1].Subsequently,a new family of quasi-lD superconductors A_2Cr_3As_3(A=K,Rb,Cs)has been discovered at ambient pressure with T_c up to 6.1 K[2-4].The key building block ofRecently, CrAs based attention. CrAs itself is superconductors have attracted a 3D antiferromagnet （AFM）, much which becomes superconducting （SC） under modest pressure with Tc - 2 K [1 ]. Subsequently, a new family of quasi-lD superconductors A2Cr3As3 （A = K,Rb,Cs） has been discovered at ambient pressure with Tc up to 6.1 K [2-4]. The key building block of A2Cr3As3 is the 1D [（Cr3As3）2-]∞ double-walled sub-nanotubes （Fig. 1）, which are separated by columns of K＋ ions, in contrast to the layered iron-pnictide and copper-oxide high Tc superconductors.

关 键 词：氧化物高温超导体 RB CS 砷化物 环境压力 铬 碱 AFM 

分 类 号：TM262[一般工业技术—材料科学与工程]