Magnetic impurities in the two-band s±-wave superconductors

被引：20
|
作者：
Li, Jian [1 ]
Wang, Yupeng
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
来源：
EPL | 2009年 / 88卷 / 01期
关键词：
ALLOYS;
D O I：
10.1209/0295-5075/88/17009
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the effects of magnetic impurities in a superconducting state with s(+/-) pairing symmetry. Within a two-band model, we find that the intra-band magnetic scattering serves as a pair breaker while the inter-band magnetic scattering preserves pairing and hardly affects transition temperature in the Born limit. We also show that the same physics can persist beyond the weak-scattering region. Our results coincide with recent experimental measurements in iron-based superconductors and thus provides an indirect evidence of the possible s(+/-) pairing symmetry in these materials. Copyright (C) EPLA, 2009
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页数：5
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