Thermal fluctuations and vortex lattice structures in chiral p-wave superconductors: Robustness of double-quanta vortices

Fredrik Nicolai Krohg; Egor Babaev; Julien Garaud; Håvard Homleid Haugen; Asle Sudbø

doi:10.1103/PhysRevB.103.214517

← Back to search

Thermal fluctuations and vortex lattice structures in chiral p-wave superconductors: Robustness of double-quanta vortices

Fredrik Nicolai Krohg, Egor Babaev, Julien Garaud, Håvard Homleid Haugen, Asle Sudbø

DOI 10.1103/PhysRevB.103.214517 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

We use large-scale Monte-Carlo simulations to study thermal fluctuations in chiral p-wave superconductors in an applied magnetic field in three dimensions. We consider the thermal stability of previously predicted unusual double-quanta flux-line lattice ground states in such superconductors. In previous works it was shown that, neglecting thermal fluctuations, a chiral p-wave superconductor forms a hexagonal lattice of doubly-quantized vortices, except extremely close to the vicinity of Hc2 where double-quanta vortices split apart. We find dissociation of double-quanta vortices driven by thermal fluctuations. However, our calculations also show that the previous predictions of hexagonal doubly-quantized vortices, where thermal fluctuations were ignored, are very robust in the considered model.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.5	Pressure not reported	unknown
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown