2019/05/07 by Natsuo Nagamura, Nagamura, Natsuo, Ryusuke Ikeda +1
Engineering · Environmental Science · Physics and Astronomy · #FOS: Physical sciences #Lattice Boltzmann Simulation Studies #Methane Hydrates and Related Phenomena #Quantum, superfluid, helium dynamics #Superconductivity (cond-mat.supr-con)
paper · pdf · doi:10.48550/arxiv.1905.02569
openalex publication_date 2019/05/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In a p-wave Fermi superfluid suffering from the nonmagnetic impurity scatterings, a coefficient of a gradient term becomes divergent upon cooling. Consequences of this divergent rigidity in the stable vortices in the B phase in globally isotropic aerogel are considered where the "impurity scattering" events are brought by the aerogel structure. For a moderately strong "impurity scatterings", the superfluid transition line Tc(P) has a quantum critical point at a low but finite pressure. We find that, with decreasing Tc via the lowering of the pressure, the distance between the half cores composing the core of the nonaxisymmetric double-core vortex which is stable at lower pressures grows as a result of the rigidity diverging at lowering temperature. The obtained result is compared with the elongation of the half core pair arising from the Fermi-liquid correction.