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.

10 pages, 3 figures

References in corpus (5)

• Superconductivity on the border of weak itinerant ferromagnetism in UCoGe
• Ginzburg-Landau theory of vortices in a multi-gap superconductor
• 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

Cited by in corpus (2)

• Metamagnetic phase transition in ferromagnetic superconductor URhGe
• Anomalous acoustoelectric effect induced by clapping modes in chiral superconductors