Metamagnetism and tricriticalilty in heavy-fermion ferromagnet URhGe

Abstract

URhGe is a ferromagnetic superconductor with a distinctive magnetic behavior. In a field applied parallel to the b-axis and perpendicular to the easy axis, URhGe exhibits an abrupt orientational transition of the magnetization with a reentrant superconducting phase emerging close to the transition field. We develop a theoretical description of the magnetic properties of URhGe by considering a spin model with competing magnetic anisotropies. The model is analyzed both analytically at zero temperature and with Monte Carlo simulations at finite temperatures. The constructed H-T phase diagram for a magnetic field parallel to the b-axis features a tricritical point on the line of phase transitions between the ferromagnetic Ising state and the paramagnetic phase. We also demonstrate that the asymptotic tricritical behavior of the order parameter and the correlation length is described by the mean-field critical exponents.

arXiv commentaccepted version

References in corpus (31)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Metallic Quantum Ferromagnets
• First order transitions and multicritical points in weak itinerant ferromagnets
• Review of U-based Ferromagnetic Superconductors: Comparison between UGe2, URhGe, and UCoGe
• Pushing the Limits of Monte Carlo Simulations for the 3d Ising Model
• Unconventional Superconductivity in UTe2
• Ferromagnetic superconductivity driven by changing Fermi surface topology
• Metamagnetic Transition in Heavy Fermion Superconductor UTe2
• High-Field Superconductivity at an Electronic Topological Transition in URhGe
• Low-dimensional antiferromagnetic fluctuations in the heavy-fermion paramagnetic ladder UTe${}_2$
• Superconductivity in Uranium Ferromagnets
• Universal low-temperature tricritical point in metallic ferromagnets and ferrimagnets
• A review of UTe${}_2$ at high magnetic fields
• p-wave superconductivity near a transverse saturation field
• Collapse of ferromagnetism and Fermi surface instability near reentrant superconductivity of URhGe
• Unconventional critical scaling of magnetization in uranium ferromagnetic superconductors UGe${}_2$ and URhGe
• Magnetic field dependence of pairing interaction in ferromagnetic superconductors with triplet pairing
• Dimensionality driven enhancement of ferromagnetic superconductivity in URhGe
• 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
• Wing structure in the phase diagram of the Ising Ferromagnet URhGe close to its tricritical point investigated by angle-resolved magnetization measurements
• Magnon Exchange Mechanism of Ferromagnetic Superconductivity
• Fermi Surface Instabilities in Ferromagnetic Superconductor URhGe
• Dilatometry study of the ferromagnetic order in single-crystalline URhGe
• Interplay between magnetism and superconductivity in URhGe
• Constraints on the merging of the transition lines at the tricritical point in a wing-structure phase diagram
• Novel critical behavior of magnetization in URhSi:Similarities to uranium ferromagnetic superconductors UGe${}_2$ and URhGe
• Metamagnetic phase transition in ferromagnetic superconductor URhGe
• Upper critical field in ferromagnetic metals with triplet pairing
• Triplet superconductivity in ferromagnets due to magnon exchange
• Magnetic Properties of the Metamagnet Ising Model in a three-dimensional Lattice in a Random and Uniform Field