p-wave superconductivity near a transverse saturation field

被引：36
|
作者：
Hattori, K. [1 ]
Tsunetsugu, H. [1 ]
机构：
[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
来源：
PHYSICAL REVIEW B | 2013年 / 87卷 / 06期
关键词：
URHGE; FERROMAGNETISM; COEXISTENCE; STATE;
D O I：
10.1103/PhysRevB.87.064501
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigate reentrant superconductivity in an Ising ferromagnetic superconductor URhGe under a transverse magnetic field h(x). The superconducting transition temperature for p-wave order parameters T-sc is calculated and shows two domes as a function of h(x). We find strong enhancement of T-sc in the high-field dome near a saturation field h(s) where the spins align in the transverse direction. Soft magnons generate strong attractive interactions there. Spin components of the pairing show a significant change between h(x) < h(s) and h(x) > h(s). We also discuss the appearance of superconductivity with zero-spin pair due to cancellation between external and exchange fields. DOI: 10.1103/PhysRevB.87.064501
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页数：5
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