structure of Pb-PbO-Pb tunnel junctions

Marcus, S.M.

doi:10.1016/0031-9163(66)90413-6

Cited by 22 publications

(9 citation statements)

References 4 publications

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“…Marcus 6 has recently observed such structure in the form of broad minima in dV/dl on Pb-Pb junctions; in some cases additional structure was resolved.…”

mentioning

confidence: 92%

Subharmonic Structure in Pb-Pb Superconductive Tunneling Junctions

Rochlin

Douglass

1966

Phys. Rev. Lett.

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“…Marcus 6 has recently observed such structure in the form of broad minima in dV/dl on Pb-Pb junctions; in some cases additional structure was resolved.…”

mentioning

confidence: 92%

Subharmonic Structure in Pb-Pb Superconductive Tunneling Junctions

Rochlin

Douglass

1966

Phys. Rev. Lett.

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“…The first anomalies were reported by Taylor and Burstein [3] who noticed a small onset in the current when the applied voltage V was equal to the energy gap, ∆/e, in a tunneling experiment between two equal superconductors. Relatively soon afterwards it was apparent [4,5] that not only is there an anomaly in the current at eV = ∆, but in fact at all submultiples 2∆/n, where n is an integer. This set of anomalies is referred to as subharmonic gap structure (SGS), and its temperature and magnetic field dependence were thoroughly characterized [6,7,8].…”

Section: Introductionmentioning

confidence: 99%

dc transport in superconducting point contacts: A full-counting-statistics view

Cuevas

Belzig

2004

Phys. Rev. B

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We present a comprehensive theoretical analysis of the dc transport properties of superconducting point contacts. We determine the full counting statistics for these junctions, which allows us to calculate not only the current or the noise, but all the cumulants of the current distribution. We show how the knowledge of the statistics of charge transfer provides an unprecedented level of understanding of the different transport properties for a great variety of situations. We illustrate our results with the analysis of junctions between BCS superconductors, contacts between superconductors with pair-breaking mechanisms and short diffusive bridges. We also discuss the temperature dependence of the different cumulants and show the differences with normal contacts. PACS numbers: 74.50.+r, 72.70.+m, ∞ −∞ dτ I(τ /2)I(−τ /2) . The second cumulant, on the other hand, is defined by C2 = t 0 0 dtdt ′ I(t)I(t ′ ) . In the static situation the currentcurrent correlation function depends only on the time difference τ = t − t ′ and decays on some characteristic scale τ0. For long observation times t0 ≫ τ0 we find for the second cumulant C2 = (t0/2e 2 )SI .

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“…where g k = ρ −1 k , g εk = r −1 εk are the conductances of the network resistors. As follows from (23), the characteristic magnitude of g ε0 is determined by the parameter A −1 (we remind that at eV > ∆, N(E) ∼ W in the subgap region). Thus, the "inelastic leakage" can be neglected, if g ε0 ≪ g 0,1 ∼ W , i.e., at A W ≫ 1 (weak relaxation).…”

Section: Nonequilibrium and Inelastic Relaxation Inside The Gapmentioning

confidence: 99%

Nonequilibrium and relaxation effects in tunnel superconducting junctions

Bezuglyĭ

Vasenko

Bratus

2016

Supercond. Sci. Technol.

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Abstract. The specific property of a planar tunnel junction with thin-film diffusive plates and long enough leads is an essential enhancement of its transmission coefficient compared to the bare transparency of the tunnel barrier [1,2]. In voltage-biased junctions, this creates favourable conditions for strong nonequilibrium of quasiparticles in the junction plates and leads, produced by multiparticle tunneling. We study theoretically the interplay between the nonequilibrium and relaxation processes in such junctions and found that nonequilibrium in the leads noticeably modifies the currentvoltage characteristic at eV > 2∆, especially the excess current, whereas strong diffusive relaxation restores the result of the classical tunnel model. At eV ≤ 2∆, the diffusive relaxation decreases the peaks of the multiparticle currents. The inelastic relaxation in the junction plates essentially suppresses the n-particle currents (n > 2) by the factor n for odd and n/2 for even n. The results may be important for the problem of decoherence in Josephson-junction based superconducting qubits.

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structure of Pb-PbO-Pb tunnel junctions

Cited by 22 publications

References 4 publications

Subharmonic Structure in Pb-Pb Superconductive Tunneling Junctions

Subharmonic Structure in Pb-Pb Superconductive Tunneling Junctions

dc transport in superconducting point contacts: A full-counting-statistics view

Nonequilibrium and relaxation effects in tunnel superconducting junctions

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