Josephson Frequency Singularity in the Noise of Normal Metal-Superconductor Junctions

Abstract

A singularity at the Josephson frequency in the noise spectral density of a disordered normal metal -- superconductor junction is predicted for bias voltages below the superconducting gap. The non-stationary Aharonov-Bohm effect, recently introduced for normal metals, is proposed as a tool for detecting this singularity. In the presence of a harmonic external field, the derivative of the noise with respect to the voltage bias reveals jumps when the applied frequency is commensurate with the Josephson frequency associated with this bias. The height of these jumps is non-monotonic in the amplitude of the periodic field. The superconducting flux quantum enters this dependence. Additional singularities in the frequency dependent noise are predicted above gap.

4 pages, 2 figures, revised version

Cited by in corpus (22)

• Shot Noise in Mesoscopic Conductors
• Photon-assisted transport in semiconductor nanostructures
• Photon-assisted electron-hole shot noise in multi-terminal conductors
• Single Carbon Nanotube--Superconductor Entangler: noise correlations and EPR states
• A Josephson frequency for fractionally charged anyons
• Semiclassical theory of shot noise in disordered SN contacts
• Photo--assisted current and shot noise in the fractional quantum Hall effect
• Effective charges and statistical signatures in the noise of normal metal--superconductor junctions at arbitrary bias
• Spin-Flip Noise in a Multi-Terminal Spin-Valve
• Superconductive proximity effect in interacting disordered conductors
• Finite size effects, super-and sub-poissonian noise in a nanotube connected to leads
• Detection of finite frequency photo-assisted shot noise with a resonant circuit
• Finite frequency noise in a normal metal - topological superconductor junction
• Screening of a Luttinger liquid wire by a scanning tunneling microscope tip: II. Transport properties
• Light emission in delta-T-driven mesoscopic conductors
• Nonlocal effects in the shot noise of diffusive superconductor - normal-metal systems
• Coherent current correlations in a double-dot Cooper pair splitter
• Probing superconducting phase fluctuations from the current noise spectrum of pseudogaped metal-superconductor tunnel junctions
• Tunable decoherence in the vicinity of a normal metal-superconducting junction
• Photo-assisted current in the fractional quantum Hall effect as a probe of the quasiparticle operator scaling dimension
• Photo-assisted shot noise probes multiple charge carriers in quantum Hall edges
• Shot Noise in Mesoscopic Systems with Resonance Andreev Tunneling