Orbital selection of the double [CuO2] layer compound Ca3Cu2O4Cl2  

作　　者：JianFa Zhao LiPeng Cao WenMin Li Jun Zhang GuangYang Dai Shuang Yu QingQing Liu XianCheng Wang GuoQiang Zhao YaTing Jia Lei Duan YouWen Long Hong-Ji Lin Chien-Te Chen Liu-Hao Tjeng ZhiWei Hu RunZe Yu ChangQing Jin 

机构地区：[1]Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]School of Physics,University of Chinese Academy of Sciences,Beijing 100049,China [3]Songshan Lake Materials Laboratory,Dongguan 523808,China [4]Synchrotron Radiation Research Center,Hsinchu 30076,China [5]Max-Planck Institute for Chemical Physics of Solids,Dresden 01187,Germany

出　　处：《Science China(Physics,Mechanics & Astronomy)》2019年第10期123-126,共4页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.11820101003);the Ministry of Science&Technology(Grant Nos.2018YFA0305701,2017YFA0302901,and 2016YFA0300301)

摘　　要：The discovery of high-temperature copper oxide superconductors(HTS)by Bednorz and Muller[1]in 1986 opened up a new field of superconductivity.Since then,several different families of materials have been discovered with greatly increased superconducting critical temperature(Tc)[2].Oxychloride cuprates,Can+1CunO2wCl2,are one such type of parent compound of high Tc cuprate superconductors.There are two members in this family known so far that can exist at ambient pressure:Ca2CuO2Cl2(single[Cu02]layer CCOC)and Ca3Cu2O4Cl2(double[CuO2]layer CCOC).Both are composed of a[CuO2]plane with the apical oxygen replaced by chlorine atoms.

关 键 词：compound LAYER DOUBLE 

分 类 号：O51[理学—低温物理]