Superconductivity in Uranium Compounds

Abstract

On the basis of microscopic theory it is demonstrated how the coupling between the electrons by means of magnetization fluctuations in ferromagnetic metal with orthorhombic symmetry gives rise equal spin pairing superconducting state with general form of the order parameter dictated by symmetry. The strong upturn of the upper critical field along $b$-direction above 5 Tesla in UCoGe is explained by the increase of pairing interaction caused by the suppression of the Curie temperature by magnetic field parallel to b-axis. It is proposed that similar phenomenon at much higher field must take place also for the field directed along the magnetically hardest a-direction.

10 pages

References in corpus (16)

• Ferromagnetism and Superconductivity in Uranium Compounds
• Extremely Large and Anisotropic Upper Critical Field and the Ferromagnetic Instability in UCoGe
• Superconductivity induced by longitudinal ferromagnetic fluctuations in UCoGe
• Superconducting states in ferromagnetic metals
• Superconductivity and Ferromagnetic Quantum Criticality in Uranium Compounds
• Gap structure in noncentrosymmetric superconductors
• Transverse and Longitudinal Magnetic-Field Responses in the Ising Ferromagnets URhGe, UCoGe and UGe2
• On the theory of superconductivity in ferromagnetic superconductors with triplet pairing
• Properties of Ferromagnetic Superconductors
• p-wave superconductivity near a transverse saturation field
• Superconductivity in ferromagnetic metals and in compounds without inversion centre
• Magnetic field dependence of pairing interaction in ferromagnetic superconductors with triplet pairing
• Non-Landau damping of magnetic excitations in systems with localized and itinerant electrons
• Relationship between Ferromagnetic Criticality and the Enhancement of Superconductivity Induced by Transverse Magnetic Fields in UCoGe
• Magnetic relaxation in uranium ferromagnetic superconductors
• Phase diagram of UGe2. Whether there are quantum phase transitions ?

Cited by in corpus (13)

• Review of U-based Ferromagnetic Superconductors: Comparison between UGe2, URhGe, and UCoGe
• Superconductivity in Uranium Ferromagnets
• Reentrant superconductivity in URhGe
• Quantum Criticality in the Ferromagnetic Superconductor UCoGe under Pressure and Magnetic Field
• Magnetism and Superconductivity in Ferromagnetic Heavy Fermion System UCoGe under In-plane Magnetic Fields
• Topological properties of ferromagnetic superconductors
• Phase diagram of UCoGe
• Observation of odd-parity superconductivity in UTe2
• Superconducting Order Parameters in Spin Space Groups: Methodology and Application
• Ground-state phase diagram of the $S=1$ one-dimensional Kondo lattice model with a uniaxial anisotropy under transverse fields
• Superconducting and ferromagnetic phase diagram of UCoGe probed by thermal expansion
• Impurity bands, line-nodes, and anomalous thermal Hall effect in Weyl superconductors
• Axionic $p+is$ superconductivity from two pairing channels