National Basic Research Program of China (Grant Nos. 2005CB724402, 2006CB601002) ;National Natural Science Foundation of China (Grant No. 50701048)
The crystal structure stability as well as electric conductance of (Sr/Ca)_2CuO_2Cl_2 compound with K_2NiF_4 structure was investigated up to 31 GPa using diamond anvil technique. It seems that (Sr/Ca)_2CuO_2Cl_2 is q...