Search results for "BISTABLE SYSTEM"

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Phase dynamics in graphene-based Josephson junctions in the presence of thermal and correlated fluctuations

2014

In this work we study by numerical methods the phase dynamics in ballistic graphene-based short Josephson junctions. The supercurrent through a graphene junction shows a non-sinusoidal phase-dependence, unlike a conventional junction ruled by the well-known d.c. Josephson relation. A superconductor-graphene-superconductor system exhibits superconductive quantum metastable states similar to those present in normal current-biased JJs. We explore the effects of thermal and correlated fluctuations on the escape time from these metastable states, when the system is stimulated by an oscillating bias current. As a first step, the analysis is carried out in the presence of an external Gaussian whit…

Josephson effectTIMING ERRORSNON-GAUSSIAN NOISEFOS: Physical sciencesBROWNIAN-MOTIONSwitching timeSuperconductivity (cond-mat.supr-con)MetastabilityCondensed Matter::SuperconductivityMesoscale and Nanoscale Physics (cond-mat.mes-hall)NOISE ENHANCED STABILITY; ZERO-VOLTAGE STATE; NON-GAUSSIAN NOISE; RESONANT ACTIVATION; ESCAPE-TIME; METASTABLE STATE; BISTABLE SYSTEM; BROWNIAN-MOTION; TIMING ERRORS; FABRY-PEROTMETASTABLE STATEBISTABLE SYSTEMFABRY-PEROTBrownian motionsupercurrentPhysicsESCAPE-TIMERESONANT ACTIVATIONCondensed Matter - Mesoscale and Nanoscale PhysicsCondensed matter physicsCondensed Matter - SuperconductivitydiffusionSupercurrentBiasingCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsNOISE ENHANCED STABILITYZERO-VOLTAGE STATEColors of noiseNoise (radio)
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