科研之友
微信
新浪微博
Facebook
分享链接
摘要
We analyze how the magnetic disorder affects the properties of the two-band s(+/-) and s(++) models, which are the subject of discussions regarding iron-based superconductors and other multiband systems like MgB2. We show that there are several cases when the transition temperature T-c is not fully suppressed by magnetic impurities in contrast to the Abrikosov-Gor%26apos;kov theory, but a saturation of T-c takes place in the regime of strong disorder. These cases are: (1) the purely interband impurity scattering and (2) the unitary scattering limit. We show that in the former case the s(+/-) gap is preserved, while the s(++) state transforms into the s(+/-) state with increasing magnetic disorder. For case (2), the gap structure remains intact.
- 出版日期2014-10-27
