p-wave superconductivity near a transverse saturation field

2013/02/05 by K. Hattori, Kazuo Hattori, Hirokazu Tsunetsugu +1
Materials Science · Mathematics · Physics and Astronomy · #Combinatorics #Condensed matter physics #Critical field #Ferromagnetism #Iron-based superconductors research #Ising model #Mathematics #Order (exchange) #Pairing #Physics #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #Saturation (graph theory) #Spins #Superconductivity #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.87.064501

published as Phys. Rev. B 87, 064501 (2013) · 5 pages, 4 figures

openalex publication_date 2013/02/05 · arxiv created 2013/02/06 · arxiv updated 2015/06/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

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.

Citations

• Field Re-entrant Superconductivity Induced by the Enhancement of Effective Mass in URhGe
• Coexistence of itinerant ferromagnetism and a nonunitary superconducting state with line nodes: Possible application toUGe2
• Coexistence of Ferromagnetism and Superconductivity Close to a Quantum Phase Transition: The Heisenberg- to Ising-type Crossover
• Superconducting states in ferromagnetic metals
• Field Dependence of the Intrinsic Domain Magnetization of a Ferromagnet