Conductance oscillations with magnetic field of a two-dimensional electron gas-superconductor junction

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dc.creatorChtchelkatchev, Nikolai M.
dc.creatorBurmistrov, Igor S.
dc.date2006-12-29
dc.date.accessioned2026-07-07T08:11:36Z
dc.date.available2026-07-07T08:11:36Z
dc.descriptionWe find the current voltage characteristics of a 2DEG-S interface in magnetic field taking into account the surface roughness. Typically in experiments $L/2R_c\gtrsim 3$, where $L$ is the surface length and $R_c$ is the cyclotron radius. The conductance behaves in experiments usually as $G=g_0+g_1\cos(2πν+δ_1)$; higher harmonics, $g_2\cos(4πν+δ_2),...$, are hardly seen. Theories based on the assumption of the interface perfectness can hardly describe qualitatively the visibility of the condctance oscillations and the amplitudes of the harmonics: they predict $g_1\sim g_2\sim g_3,...$. Our approach with the surface roughness qualitatively agrees with experiments. It is shown how a disorder at a 2DEG-S interface suppresses the conductance oscillations with $ν$.
dc.descriptiondraft version
dc.identifierhttps://arxiv.org/abs/cond-mat/0612673
dc.identifierhttp://arxiv.org/abs/cond-mat/0612673
dc.identifierPhysical Review B 75, 214510 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.214510
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/132172
dc.subjectMesoscale and Nanoscale Physics
dc.titleConductance oscillations with magnetic field of a two-dimensional electron gas-superconductor junction
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