Divergence at Low Bias and Down-Mixing of the Current Noise in a Diffusive Superconductor–Normal-Metal–Superconductor Junction
E. Lhotel, O. Coupiac, F. Lefloch, H. Courtois, M. Sanquer
DOI 10.1103/PhysRevLett.99.117002 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We present current noise measurements in a long diffusive superconductor–normal-metal–superconductor junction in the low voltage regime, in which transport can be partially described in terms of coherent multiple Andreev reflections. We show that, when decreasing voltage, the current noise exhibits a strong divergence together with a broad peak. We ascribe this peak to the mixing between the ac-Josephson current and the noise of the junction itself. We show that the junction noise corresponds to the thermal noise of a nonlinear resistor 4kBT/R with R=V/I(V) and no adjustable parameters.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 1.18 | Pressure not reported | onset |
Similar papers
Multiple Andreev reflection and giant excess noise in diffusive superconductor/normal-metal/superconductor junctions
similarity 0.95T. Hoss et al.
Source status unknown — claims are unverified
Magnetic-field-induced stabilization of nonequilibrium superconductivity in a normal-metal/insulator/superconductor junction
similarity 0.94J. T. Peltonen et al.
Source status unknown — claims are unverified
Enhanced conductance near zero voltage bias in mesoscopic superconductor-semiconductor junctions
similarity 0.94P. H. C. Magnée et al.
Source status unknown — claims are unverified
Nonequilibrium transport in mesoscopic normal-metal–superconducting structures
similarity 0.94C.-J. Chien & V. Chandrasekhar
Source status unknown — claims are unverified
Nonlocal Correlations in Normal-Metal Superconducting Systems
similarity 0.94P. Cadden-Zimansky & V. Chandrasekhar
Source status unknown — claims are unverified
Manifestation of coherent effects in the conductivity of superconductor/insulator/normal-metal/insulator/superconductor junctions
similarity 0.94I. P. Nevirkovets et al.
Source status unknown — claims are unverified