铁磷族化合物及其超导电性

氟掺杂的LaFeAsO中26K超导电性的发现极大地促进了凝聚态物理的发展。在短短的两年时间中,已经有过千篇文章发表,已经有七种新结构被发现,超导转变温度也被迅速提升到了55～57K。此外,在超导机理方面这类化合物也已经被认定属于非常规,而反铁磁自旋涨落被认为是导致超导配对的媒介。从材料和物理学的角度对这类化合物的性质和超导机理给出了简单的综述。还对未来的研究及应用给出了一些展望。

Research on Materials and Superconductivity in Iron Pnictides

The discovery of superconductivity at 26 K in F doped LaOFeAs has stimulated enormous interests in the field of condensed matter physics.In short two years more than 1 000 scientific papers have been published,the family of the iron pnictide superconductors has been quickly expanded to seven different structures and the superconducting transition temperature has been rapidly raised to about 55~57 K.In additional the pairing mechanism has been categorized as unconventional with the antiferromagnetic spin fluctuations probably as the pairing media.This article will give a brief review on the progress of both materials and physics in this field.We will also give some perspectives on the possible applications of these new superconductors.