Vortex viscosity due to Eddy currents in superconductor-semiconductor hybrids

John Baker; A. G. Rojo

doi:10.1103/PhysRevB.64.014513

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Vortex viscosity due to Eddy currents in superconductor-semiconductor hybrids

John Baker, A. G. Rojo

DOI 10.1103/PhysRevB.64.014513 · Physical Review B

T1

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Abstract

When a two-dimensional electron gas (2DEG) is situated a small distance from a thin superconducting film, an enhancement of vortex motion damping may occur. This enhanced damping is due to Eddy currents created in the 2DEG by the moving vortices. In this paper a detailed calculation of this enhanced vortex damping is performed for an isolated vortex and for vortices flowing in a channel. We calculate the magnitude of this damping both analytically and numerically, giving its dependence on film thickness, channel density and length, and superconductor-2DEG separation.

Source-reported materials — not catalogue approval

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