Supported by the National Science Foundation of USA (Grant No.DMR-0821284);the National Natural Science Foundation of China (Grant No. 50372005);the Natural Science Foundation of Beijing (Grant No.1072007)
By comparing the data of lattice parameters of more than 50 new FeAs-based high temperature superconductors in two syetems, the effect of bondlength on superconducting transition temperature (T C ) was found that, for...