Coexistence of ferromagnetism and superconductivity

Abstract

A comprehensive theory is developed that describes the coexistence of p-wave, spin-triplet superconductivity and itinerant ferromagnetism. It is shown how to use field-theoretic techniques to derive both conventional strong-coupling theory, and analogous gap equations for superconductivity induced by magnetic fluctuations. It is then shown and discussed in detail that the magnetic fluctuations are generically stronger on the ferromagnetic side of the magnetic phase boundary, which substantially enhances the superconducting critical temperature in the ferromagnetic phase over that in the paramagnetic one. The resulting phase diagram is compared with the experimental observations in UGe_2 and ZrZn_2.

16 pp., REVTeX, 6 eps figs; final version as published

Cited by in corpus (25)

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• Quantum Critical Behavior and Possible Triplet Superconductivity in Electron Doped CoO2 Sheets
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• Superconductivity in ferromagnetic metals and in compounds without inversion centre
• Coexistence of ferromagnetism and superconductivity near quantum phase transition: The Heisenberg- to Ising-type crossover
• Effects of Lifshitz transitions in ferromagnetic superconductors: the case of URhGe
• Neutron investigation of the magnetic scattering in an iron-based ferromagnetic superconductor
• Triplet superconductivity vs. easy-plane ferromagnetism in a 1D itinerant electron system with transverse spin anisotropy
• Derivation of the Ginzburg-Landau equations of a ferromagnetic p-wave superconductor
• Triplet superconductivity in a 1D itinerant electron system with transverse spin anisotropy
• Possible odd-frequency Amperean magnon-mediated superconductivity in topological insulator -- ferromagnetic insulator bilayer
• Interplay between magnetism and superconductivity in URhGe
• Superconductivity of overdoped cuprates: the modern face of the ancestral two-electron exchange
• Split transition in ferromagnetic superconductors
• Signatures of pairing mechanisms and order parameters in ferromagnetic superconductors
• Quantum fluctuation driven first order phase transition in weak ferromagnetic metals
• Superconducting Correlations in the One-Dimensional Kondo Lattice Models under Magnetic Fields
• Triplet superconductivity in ferromagnets due to magnon exchange
• Nearly Ferromagnetic Superconductors
• The Pairing Symmetry in the Ferromagnetic Superconductor $UG{e}_2$