Search results for "Spin polarized transport in semiconductors"

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Nonlinear relaxation phenomena in metastable condensed matter systems

2016

Nonlinear relaxation phenomena in three different systems of condensed matter are investigated. (i) First, the phase dynamics in Josephson junctions is analyzed. Specifically, a superconductor-graphene-superconductor (SGS) system exhibits quantum metastable states, and the average escape time from these metastable states in the presence of Gaussian and correlated fluctuations is calculated, accounting for variations in the the noise source intensity and the bias frequency. Moreover, the transient dynamics of a long-overlap Josephson junction (JJ) subject to thermal fluctuations and non-Gaussian noise sources is investigated. Noise induced phenomena are observed, such as the noise enhanced s…

Josephson effectQuantum noise enhanced stabilityGeneral Physics and AstronomyThermal fluctuationslcsh:AstrophysicsDouble-well potential01 natural sciences7. Clean energySettore FIS/03 - Fisica Della Materia010305 fluids & plasmasOpen quantum systemsMetastabilityMetastabilityJosephson junctionlcsh:QB460-4660103 physical sciencesSpin polarized transport in semiconductorsddc:530lcsh:Science010306 general physicsSpin (physics)Quantum fluctuationNoise enhanced stabilityPhysicsmetastability; nonequilibrium statistical mechanics and nonlinear relaxation time; noise enhanced stability; Josephson junction; spin polarized transport in semiconductors; open quantum systems; quantum noise enhanced stabilityCondensed matter physicsNonequilibrium statistical mechanics and nonlinear relaxation timeJosephson junction; Metastability; Noise enhanced stability; Nonequilibrium statistical mechanics and nonlinear relaxation time; Open quantum systems; Quantum noise enhanced stability; Spin polarized transport in semiconductorsDissipationlcsh:QC1-999Open quantum systemlcsh:Qlcsh:PhysicsNoise (radio)
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