Josephson effect in graphene SBS junctions

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dc.creatorMaiti, Moitri
dc.creatorSengupta, K.
dc.date2006-11-23
dc.date2007-05-10
dc.date.accessioned2026-07-07T08:29:43Z
dc.date.available2026-07-07T08:29:43Z
dc.descriptionWe study Josephson effect in graphene superconductor- barrier- superconductor junctions with short and wide barriers of thickness $d$ and width $L$, which can be created by applying a gate voltage $V_0$ across the barrier region. We show that Josephson current in such graphene junctions, in complete contrast to their conventional counterparts, is an oscillatory function of both the barrier width $d$ and the applied gate voltage $V_0$. We also demonstrate that in the thin barrier limit, where $V_0 \to \infty$ and $d \to 0$ keeping $V_0 d$ finite, such an oscillatory behavior can be understood in terms of transmission resonance of Dirac-Bogoliubov-de Gennes quasiparticles in superconducting graphene. We discuss experimental relevance of our work.
dc.description7 Pg., 6 Figs, extended version submitted to PRB
dc.identifierhttps://arxiv.org/abs/cond-mat/0611614
dc.identifierhttp://arxiv.org/abs/cond-mat/0611614
dc.identifierPhys. Rev. B 76, 054513 (2007)
dc.identifierdoi:10.1103/PhysRevB.76.054513
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/138040
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleJosephson effect in graphene SBS junctions
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