探索非常规高温超导体

Searching for new unconventional high temperature superconductors

近年来,在理解铜基和铁基非常规高温超导体共性的基础上,提出了非常规高温超导体电子结构基因的概念,指出实现高温超导,需要“参与强反铁磁超交换耦合的d电子轨道独立于其他轨道单独出现在费米能级附近”.本文总结这方面的进展,讨论几类满足高温超导基因的结构以及和此类基因匹配的可能材料,探讨寻找非常规高温超导体新体系的可能性.

Based on the common properties exhibited in both cuprates and iron-based high temperature superconductors,we have recently proposed the“gene”concept for unconventional high temperature superconductors:those d-orbitals of transition metal elements with the strongest in-plane bonding to anion porbitals must be isolated near Fermi energy.Here we summarized recent progress in this research direction and discussed several electronic environments that meet the“gene”condition.We also discussed the challenge and the possibility in finding new unconventional high temperature superconductors.