Unusual mechanism of vortex viscosity generated by mixed normal modes in superconductors with broken time reversal symmetry

被引：19
作者：
Silaev, Mihail [1 ,2 ,3 ,4 ]
Babaev, Egor [2 ,3 ]
机构：
[1] Inst Phys Microstruct RAS, Nizhnii Novgorod 603950, Russia
[2] Royal Inst Technol, Dept Theoret Phys, SE-10691 Stockholm, Sweden
[3] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA
[4] Aalto Univ, OV Lounasmaa Lab, FI-00076 Helsinki, Finland
来源：
PHYSICAL REVIEW B | 2013年 / 88卷 / 22期
基金：
俄罗斯基础研究基金会; 美国国家科学基金会; 瑞典研究理事会;
关键词：
MOTION;
D O I：
10.1103/PhysRevB.88.220504
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We show that under certain conditions, multiband superconductors with broken time reversal symmetry have a vortex viscosity-generating mechanism which is different from that in conventional superconductors. It appears due to the existence of a mixed superfluid phase-density mode inside the vortex core. This contribution is dominant near the time reversal symmetry-breaking phase transition. The results could be relevant for the three-band superconductor Ba1-xKxFe2As2.
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页数：5
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