Superconductivity and Crystal Structures of(Ba_(1-x)K_x)Fe2As2(x=0-1)

摘要

The discovery of iron arsenide superconductors has opened new avenues for superconductivity research.Initial reports on the critical temperatures(T_c)for LaFeAs(O_(1-x)F_x)of 26-43 K were quickly followed by even higher transition temperatures,up to 55 K in SmFeAs(O_(1-x)F_x).It is accepted that iron arsenides represent a further class of high-T_c superconductors,22 years after the discovery of the cuprates.