Multiple Andreev Reflections and Enhanced Shot Noise in Diffusive Superconducting-Normal-Superconductor Junctions
E. V. Bezuglyi, E. N. Bratus', V. S. Shumeiko, G. Wendin
DOI 10.1103/PhysRevLett.83.2050 · 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 study the dc conductance and current fluctuations in mesoscopic diffusive SNS junctions at subgap applied voltages eV<2Δ. We find that in spite of the multiple Andreev reflections, the current-voltage characteristic of a long SNINS structure obeys Ohm's law. At the same time, non-equilibrium heating of subgap electrons produces giant shot noise with pronounced subharmonic gap structure which corresponds to stepwise growth of the effective transferred charge. At eV→0, the shot noise approaches the magnitude of the Johnson-Nyquist noise with the effective temperature T⋆=Δ/3. We analyze the role of inelastic scattering and present a criterion of strong nonequilibrium.
Similar papers
Andreev Reflection Enhanced Shot Noise in Mesoscopic SNS Junctions
similarity 0.94X. Jehl et al.
Source status unknown — claims are unverified
Current noise in long diffusive SNS junctions in the incoherent multiple Andreev reflections regime
similarity 0.94E. V. Bezuglyi et al.
Source status unknown — claims are unverified
Nonequilibrium Current Noise in Mesoscopic Disordered Superconductor–Normal-Metal–Superconductor Junctions
similarity 0.93Y. Naveh & D. V. Averin
Source status unknown — claims are unverified
Finite-voltage shot noise in normal-metal–superconductor junctions
similarity 0.93A. L. Fauchère et al.
Source status unknown — claims are unverified
Multiple Andreev reflections and enhanced shot noise in diffusive SNS junctions
similarity 0.93E. V. Bezuglyi et al. · 1999 · arXiv:cond-mat/9905233
Source status unknown — claims are unverified
Multiple Andreev reflection and giant excess noise in diffusive superconductor/normal-metal/superconductor junctions
similarity 0.93T. Hoss et al.
Source status unknown — claims are unverified