Nonequilibrium effects in tunnel Josephson junctions
E. V. Bezuglyi, A. S. Vasenko, V. S. Shumeiko, G. Wendin
DOI 10.1103/PhysRevB.72.014501 · Physical Review B
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 nonequilibrium effects in current transport through voltage biased tunnel junction with long diffusive superconducting leads at low applied voltage eV⪡2Δ, and finite temperatures. Due to a small value of the Josephson frequency, the quasiparticle spectrum adiabatically follows the time evolution of the superconducting phase difference, which results in the formation of oscillating bound states in the vicinity of the tunnel junction (Andreev band). The quasiparticles trapped by the Andreev band generate higher even harmonics of the Josephson ac current, and also, in the presence of inelastic scattering, a nonequilibrium dc current, which may considerably exceed the dc quasiparticle current given by the tunnel model. The distribution of traveling quasiparticles also deviates from the equilibrium due to the spectrum oscillations, which results in an additional contribution to the dc current, proportional to V.
Similar papers
Coherent multiple Andreev reflections and current resonances in SNS quantum point contacts
similarity 0.91Å. Ingerman et al.
Source status unknown — claims are unverified
Nonequilibrium noise and current fluctuations at the superconducting phase transition
similarity 0.91Dmitry Bagrets & Alex Levchenko
Source status unknown — claims are unverified
Nonequilibrium effects in a Josephson junction coupled to a precessing spin
similarity 0.91C. Holmqvist et al.
Source status unknown — claims are unverified
Phase-dependent Andreev spectrum in a diffusive SNS junction: Static and dynamic current response
similarity 0.91M. Ferrier et al.
Source status unknown — claims are unverified
Andreev level spectrum and Josephson current in a superconducting ballistic point contact
similarity 0.91Magnus Hurd & Göran Wendin
Source status unknown — claims are unverified
Equilibrium and time-dependent Josephson current in one-dimensional superconducting junctions
similarity 0.91Enrico Perfetto et al.
Source status unknown — claims are unverified