Dissipation and supercurrent fluctuations in a diffusive NS ring

Abstract

A mesoscopic hybrid Normal/ Superconducting (NS) ring is characterized by a dense Andreev spectrum with a flux dependent minigap. We measure the linear response to a high frequency flux, in a wide frequency range, with a multimode superconducting resonator. We find that the current response contains, beside the well known dissipation-less Josephson contribution, a large dissipative component. At high frequency compared to the minigap and low temperature we find that the dissipation is due to transitions above the minigap. In contrast, at lower frequency there is range of temperature for which dissipation is caused predominantly by the relaxation of the Andreev states' population.

References in corpus (7)

• Direct coupling between magnetism and superconducting current in Josephson Phi junction
• Phase controlled superconducting proximity effect probed by tunneling spectroscopy
• Proximity DC squids in the long junction limit
• Josephson Current through a Semiconductor Nanowire: effect of strong spin-orbit coupling and Zeeman splitting
• Dephasing due to electron-electron interaction in a diffusive ring
• Linear AC Response of Diffusive SNS Junctions
• Phase sensitive electron-phonon coupling in a superconducting proximity structure

Cited by in corpus (32)

• Supercurrent Spectroscopy of Andreev States
• Interplay Between Electron Over-Heating and ac Josephson Effect
• Microwave nanobolometer based on proximity Josephson junctions
• Zeeman and spin-orbit effects in the Andreev spectra of nanowire junctions
• Dynamic current susceptibility as a probe of Majorana bound states in nanowire-based Josephson junctions
• Multiple scattering theory for superconducting heterostructures
• Non-Hermitian Fermi-Dirac Distribution in Persistent Current Transport
• Full range of proximity effect probed with Superconductor/Graphene/Superconductor junctions
• Superconductivity in the presence of microwaves: Full phase diagram
• Simple Floquet-Wannier-Stark-Andreev viewpoint and emergence of low-energy scales in a voltage-biased three-terminal Josephson junction
• Josephson inductance as a probe for highly ballistic semiconductor-superconductor weak links
• Microwave signature of robust topological Andreev-level crossings in superconducting proximitized crystalline Bi nanowires
• Phase-dependent microwave response of a graphene Josephson junction
• Andreev spectrum with high spin-orbit interactions: revealing spin splitting and topologically protected crossings
• Zero-frequency supercurrent susceptibility signatures of trivial and topological zero-energy states in nanowire junctions
• Phase dependent Andreev spectrum in a difusive SNS junction. Static and dynamic current response
• Josephson effect in topological superconducting rings coupled to a microwave cavity
• Coherence-enhanced, phase-dependent dissipation in long SNS Josephson junctions: revealing Andreev Bound States dynamics
• Quartets and the Current-Phase Structure of a Double Quantum Dot Superconducting Bijunction at Equilibrium
• Admittance of a long diffusive SNS junction
• Field-enhanced recombination at low temperatures in an organic photovoltaic blend
• Signatures of odd-frequency pairing in the Josephson junction current noise
• Microwave Admittance of Gold-Palladium Nanowires with Proximity-Induced Superconductivity
• Microwave response of a superconductor beyond the Eliashberg theory
• Theory of topological spin Josephson junctions
• Dynamical response of dissipative helical edge states
• Phase-sensitive transport at a normal metal-superconductor interface close to a Josephson junction
• ac properties of short Josephson weak links
• Persistent current noise in narrow Josephson junctions
• Korshunov instantons in a superconductor at elevated bias current
• Phase-dependent supercurrent and microwave dissipation of HgTe quantum well Josephson junctions
• Sample-based calibration for cryogenic broadband microwave reflectometry measurements