Pré-Publication, Document De Travail Année : 2023

Approaching ideal rectification in superconducting diodes through multiple Andreev reflections

A. Zazunov
  • Fonction : Auteur
J. Rech
T. Jonckheere
  • Fonction : Auteur
T. Martin
R. Egger
  • Fonction : Auteur

Résumé

We analyze the rectification properties of voltage-biased Josephson junctions exhibiting the superconducting diode effect. Taking into account multiple Andreev reflection (MAR) processes in our scattering theory, we consider a short weak link of arbitrary transparency between two superconductors with finite Cooper pair momentum $2q$. In equilibrium, the diode efficiency is bounded from above in this model, with maximal efficiency $\eta_0\approx 0.4$. Out of equilibrium, we find a rich subharmonic structure in the current-voltage curve. For high transparency and low bias voltage $V$, the rectification efficiency $\eta(V)$ approaches the ideal value $\eta=1$ for $q\xi\to 1$ (with coherence length $\xi$).

Dates et versions

hal-04300045 , version 1 (22-11-2023)

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A. Zazunov, J. Rech, T. Jonckheere, Benoît Grémaud, T. Martin, et al.. Approaching ideal rectification in superconducting diodes through multiple Andreev reflections. 2023. ⟨hal-04300045⟩
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