Superconductivity is a novel phenomenon caused by the quantum condensation of large number of electrons in solid state materials, and it involves rich physics principles, including the quantum mechanics and with many potential applications. Superconductors enjoy properties of zero resistivity, perfect diamagnetism and macroscopic quantum phase coherence. Superconductivity can be applied in energy industry, communication, transport, medication, defense and large scale scientific equipment. The discovery of iron based superconductors is a typical example, where Chinese scientists have played essential roles. This can be said as a turning point of researches of superconductivity by Chinese scientists in the field of superconductivity. Since then the Chinese scientists have made many outstanding achievements in this field, furthermore, in many sub-directions of the field, they are gradually playing leading roles.

iron based superconductors, experimental investigation, perspect of researches of superconductivity in China