Relationship Between the Structure and the Superconductivity in LaFeAsO

Bulletin of the Korean chemical society

In-Ja Lee¹  Sungwoo Cho¹  Dongwoon Jung¹ 

关键词: Electronic structure;    Oxypnictide;    Superconductivity;    SDW;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The electronic structure of LaFeAsO was analyzed by tight-binding band calculation based upon the normal and shrunk lattices. A strong Fermi surface nesting was found in the normal LaFeAsO, while most of the nesting area was disappeared in the shrunk LaFeAsO. It was found, therefore, high pressure atmosphere is required to become a superconductor for LaFeAsO by suppressing the SDW (spin density wave) state through the disappearance of the Fermi surface nesting.

【 授权许可】

Unknown