Paramagnetic current and dissipative vortex motion in type-II superconductors

Kwangyl Park; Sung-Ho Suck Salk

doi:10.1103/PhysRevB.57.5362

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Paramagnetic current and dissipative vortex motion in type-II superconductors

Kwangyl Park, Sung-Ho Suck Salk

DOI 10.1103/PhysRevB.57.5362 · Physical Review B

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Abstract

In order to find the microscopic origin of the components of the paramagnetic current generated in a moving vortex core, we present a perturbation method to solve the Bogoliubov–de Gennes equations for a moving vortex in clean type-II superconductors. The paramagnetic current and its associated dissipation at the moving vortex core are shown to result from intrinsic concommitant effects. From the present perturbation approach involving no presupposition of the Magnus force, the long-standing problem of the validity of the two different classical models is discussed. The components of the derived paramagnetic current are found to be identical to the classical model of Noziéres and Vinen.