Phase diagram of UCoGe

Abstract

The temperature-pressure phase diagram of ferromagnetic superconductor UCoGe includes four phase transitions. They are between the paramagnetic and the ferromagnetic states with the subsequent transition in the superconducting ferromagnetic state and between the normal and the superconducting states after which has to occur the transition to the superconducting ferromagnetic state. Here we have developed the Landau theory description of the phase diagram and established the specific ordering arising at each type of transition. The phase transitions to the ferromagnetic superconducting state are inevitably accompanied by the emergency of screening currents. The corresponding magnetostatics considerations allow to establish the significant difference between the transition from the ferromagnetic to the ferromagnetic superconducting state and the transition from the superconducting to the ferromagnetic superconducting state.

arXiv comment10 pages, 3 figures

References in corpus (12)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Ginzburg-Landau theory of vortices in a multi-gap superconductor
• Polar phase of superfluid 3He in anisotropic aerogel
• Enhancement of superconductivity near the ferromagnetic quantum critical point in UCoGe
• Superconducting states in ferromagnetic metals
• Superconductivity and Ferromagnetic Quantum Criticality in Uranium Compounds
• Superconductivity in Uranium Ferromagnets
• Absence of Meissner State and Robust Ferromagnetism in the Superconducting State of UCoGe: Possible Evidence of Spontaneous Vortex State
• Quantum Criticality in the Ferromagnetic Superconductor UCoGe under Pressure and Magnetic Field
• Superconductivity in Uranium Compounds
• Topological properties of ferromagnetic superconductors
• Spin Susceptibility in the Superconducting state of Ferromagnetic Superconductor UCoGe

Cited by in corpus (11)

• Spontaneously polarized half-gapped superconductivity
• Field-induced tuning of the pairing state in a superconductor
• Superconductivity in Uranium Ferromagnets
• Classification of topological crystalline superconducting nodes on high-symmetry lines: Point nodes, line nodes, and Bogoliubov Fermi surfaces
• $Z_4$ Topological Superconductivity in UCoGe
• Magnetic Response of Majorana Kramers Pairs Protected by Z2 Invariants
• Magnetic response of Majorana Kramers pairs with an order-two symmetry
• Metamagnetic phase transition in ferromagnetic superconductor URhGe
• Theory of type-II superconductivity in ferromagnetic metals with triplet pairing
• Anomalous acoustoelectric effect induced by clapping modes in chiral superconductors
• Impurity bands, line-nodes, and anomalous thermal Hall effect in Weyl superconductors