Properties of Ferromagnetic Superconductors

Abstract

Thanks to the discovery in the last decade of three uranium ferromagnetic superconductors, UGe2, URhGe and UCoGe, the fascinating aspects of the interplay between the triplet state of Cooper pairing and ferromagnetism have emerged. Furthermore, as the ferromagnetic properties in the normal state are quite different with respect to the proximity of the ferromagnetic-paramagnetic instabilities, the feedback with the coexistence of superconductivity gives rise to quite different boundaries in pressure and magnetic field. Special attention is given on the location of the materials with respect to the tricriticality and on the reinforcement of superconductivity in a transverse field response with respect to the direction of the ferromagnetic sublattice magnetization. The other facts of the interplay between ferromagnetism and superconductivity is briefly mentioned.

22 pages, 14 figures, to be published in Comptes Rendus - Physique

References in corpus (34)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Quantum Phase Transitions in the Itinerant Ferromagnet ZrZn${}_2$
• Pressure dependence of the magnetization in the ferromagnetic superconductor UGe_2
• Tricritical behavior in itinerant quantum ferromagnets
• Extremely Large and Anisotropic Upper Critical Field and the Ferromagnetic Instability in UCoGe
• Tricritical point and wing structure in the itinerant ferromagnet UGe2
• Ferromagnetic superconductivity driven by changing Fermi surface topology
• Quantum critical effects on transition temperature of magnetically mediated p-wave superconductivity
• Enhancement of superconductivity near the ferromagnetic quantum critical point in UCoGe
• Strong Enhancement of Superconducting T_c in Ferromagnetic Phases
• Superconducting states in ferromagnetic metals
• Microscopic Coexistence of Ferromagnetism and Superconductivity in Single-Crystal UCoGe
• Pressure-temperature Phase Diagram of Polycrystalline UCoGe Studied by Resistivity Measurement
• Coupled CDW and SDW Fluctuations as an Origin of Anomalous Properties of Ferromagnetic Superconductor UGe_2
• Field Re-entrant Superconductivity Induced by the Enhancement of Effective Mass in URhGe
• Enhanced Impurity Scattering due to Quantum Critical Fluctuations
• Density Fluctuation Mediated Superconductivity
• Superconductivity Reinforced by Magnetic Field and the Magnetic Instability in Uranium Ferromagnets
• Heat-capacity anomalies at $T_{sc}$ and $T^{\ast }$ in the ferromagnetic superconductor UGe${}_2$
• Anomalous spin distribution in the superconducting ferromagnet UCoGe studied by polarized neutron diffraction
• Pressure Evolution of the Ferromagnetic and Field Re-entrant Superconductivity in URhGe
• Quantum Metamagnetic Transitions Induced by Changes in Fermi-Surface Topology -Applications to a Weak Itinerant-Electron Ferromagnet;ZrZn_2
• Magnetic field dependence of pairing interaction in ferromagnetic superconductors with triplet pairing
• First Observation of Quantum Oscillations in the Ferromagnetic Superconductor UCoGe
• Absence of Meissner State and Robust Ferromagnetism in the Superconducting State of UCoGe: Possible Evidence of Spontaneous Vortex State
• Coexistence of ferromagnetism and superconductivity near quantum phase transition: The Heisenberg- to Ising-type crossover
• Symmetry of the order parameter in superconducting ZrZn_2
• Meissner phases in spin-triplet ferromagnetic superconductors
• Ferromagnetic Quantum Critical Fluctuations and Anomalous Coexistence of Ferromagnetism and Superconductivity in UCoGe Revealed by Co-NMR and NQR Studies
• Thermodynamics of ferromagnetic superconductors with spin-triplet electron pairing
• Coexistence of itinerant ferromagnetism and a non-unitary superconducting state with line nodes: possible application to UGe${}_2$
• Thermal expansion of the superconducting ferromagnet UCoGe
• Pressure-phase diagram of UCoGe by ac-susceptibility and resistivity measurements
• Two Ferromagnetic Phases in Spin-Fermion Systems

Cited by in corpus (34)

• Spin-polarized supercurrents for spintronics: a review of current progress
• Metallic Quantum Ferromagnets
• Review of U-based Ferromagnetic Superconductors: Comparison between UGe2, URhGe, and UCoGe
• Ferromagnetism and Superconductivity in Uranium Compounds
• Superconductivity and Ferromagnetic Quantum Criticality in Uranium Compounds
• Topologically protected surface Majorana arcs and bulk Weyl fermions in ferromagnetic superconductors
• Heavy fermions in high magnetic field
• Superconductivity in Uranium Ferromagnets
• Superconductivity in the ferromagnetic semiconductor SmN
• Coexistence of two vector order parameters: a holographic model for ferromagnetic superconductivity
• Dimensionality driven enhancement of ferromagnetic superconductivity in URhGe
• Kondo-lattice ferromagnets and their peculiar order along the magnetically hard axis
• Quantum Criticality in the Ferromagnetic Superconductor UCoGe under Pressure and Magnetic Field
• Termination control of electronic phases in oxide thin films and interfaces: LaAlO3/SrTiO3(001)
• Superconductivity in Uranium Compounds
• Switching of magnetic ground states across the UIr1-xRhxGe alloy system
• Size of stripe domains in a superconducting ferromagnet
• Pre-asymptotic critical behavior and effective exponents in disordered metallic quantum ferromagnets
• Magnetic relaxation in uranium ferromagnetic superconductors
• Piezomagnetism in the Ising ferromagnet URhGe
• Field-induced Phenomena in Ferromagnetic Superconductors UCoGe and URhGe
• Ferromagnetic quantum critical point in a locally noncentrosymmetric and nonsymmorphic Kondo metal
• Pairing gaps near ferromagnetic quantum critical points
• Angular variation of the magnetoresistance of the superconducting ferromagnet UCoGe
• Localization of 5f-electrons and pressure effects on magnetism in U intermetallics in the light of spin-fluctuation theory
• Superconducting and ferromagnetic phase diagram of UCoGe probed by thermal expansion
• The quantum ferromagnetic transition in a clean Kondo lattice is discontinuous
• Triplet superconductivity in ferromagnets due to magnon exchange
• Antiferromagnetic ground state in NpCoGe
• Re-entrance of resistivity due to the interplay of superconductivity and magnetism in $\ce{Eu_{0.73}Ca_{0.27}(Fe_{0.87}Co_{0.13})2As2}$
• Phenomenological theory in reentrant uranium-based superconductors
• Phenomenological description of anisotropy effects in some ferromagnetic superconductors
• Non-collinear ferromagnetism in the Kondo lattice Ce${}_5$CoGe${}_2$
• Critical temperature of triplet superconductor-ferromagnet bilayers as a probe for pairing symmetry