Nonlocal superconducting quantum interference device
Taewan Noh, Andrew Kindseth, Venkat Chandrasekhar
DOI 10.1103/PhysRevB.104.064503 · 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
Superconducting quantum interference devices (SQUIDs) that incorporate two superconductor/insulator/superconductor (SIS) Josephson junctions in a closed loop form the core of some of the most sensitive detectors of magnetic and electric fields currently available. SQUIDs in these applications are typically operated with a finite voltage which generates microwave radiation through the ac Josephson effect. This radiation may impact the system being measured. We describe here a SQUID in which the Josephson junctions are formed from strips of normal metal (N) in good electrical contact with the superconductor (S). Such SNS SQUIDs can be operated under a finite voltage bias with performance comparable or potentially better than conventional SIS SQUIDs. However, they also permit a mode of operation that is based on the unusual interplay of quasiparticle currents and supercurrents in the normal metal of the Josephson junction. The method allows measurements of the flux dependence of the critical current of the SNS SQUID without applying a finite voltage bias across the SNS junction, enabling sensitive flux detection without generating microwave radiation.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Nonlocal effects in mesoscopic superconducting aluminum structures
similarity 0.94C. Strunk et al.
Source status unknown — claims are unverified
Coherent superconducting quantum pump
similarity 0.94Felix Hoehne et al.
Source status unknown — claims are unverified
Measurement of energy decay in superconducting qubits from nonequilibrium quasiparticles
similarity 0.94M. Lenander et al.
Source status unknown — claims are unverified
Quantitative analysis of Josephson-quasiparticle current in superconducting single-electron transistors
similarity 0.93Y. Nakamura et al.
Source status unknown — claims are unverified
Nonlocal electrodynamics of long ultranarrow Josephson junctions: Experiment and theory
similarity 0.93A. A. Abdumalikov, Jr. et al.
Source status unknown — claims are unverified
RF-Driven Josephson Bifurcation Amplifier for Quantum Measurement
similarity 0.93I. Siddiqi et al.
Source status unknown — claims are unverified