Properties of Grooved Dayem Bridge based YBa${}_2$Cu${}_3$O${}_{7-\delta }$ Superconducting Quantum Interference Devices and Magnetometers

Abstract

The transport properties of a YBa${}_2$Cu${}_3$O${}_{7-\delta }$ superconducting quantum interference device (SQUID) based on grooved Dayem bridge weak links are studied as a function of temperature: at high temperatures ($60$K$<T<T_{\mathrm{c}}=89$~K) the weak links show properties similar to SNS junctions, while at temperatures below 60~K the weak links behave like short Dayem bridges. Using these devices, we have fabricated SQUID magnetometers with galvanically coupled in-plane pick-up loops: at $T=77$~K, magnetic field white noise levels as low as $63$~fT/$\sqrt{\mathrm{Hz}}$ have been achieved.

References in corpus (8)

• Nano Superconducting Quantum Interference device: a powerful tool for nanoscale investigations
• Current Assisted, Thermally Activated Flux Liberation in Ultrathin Nanopatterned NbN Superconducting Meander Structures
• Josephson-like behavior in YBa${}_2$Cu${}_3$O${}_{7-\delta }$ nano-bridges carrying the depairing current
• Ultra low noise YBCO nanoSQUIDs implementing nanowires
• Transport properties of ultrathin YBa${}_2$Cu${}_3$O${}_{7-\delta }$ nanowires: a route to single photon detection
• NanoSQUIDs: Basics & recent advances
• Grooved Dayem nanobridges as building blocks of high-performance YBa${}_2$Cu${}_3$O${}_{7-\delta }$ SQUID magnetometers
• The role of kinetic inductance on the performance of YBCO SQUID magnetometers

Cited by in corpus (4)

• Quasiclassical theory of charge transport across mesoscopic normal metal-superconducting heterostructures with current conservation
• Mapping the phase diagram of a YBa${}_2$Cu${}_3$O${}_{7-\delta }$ nanowire through electromigration
• A finite element method for the quasiclassical theory of superconductivity
• Operative Approach to Quantum Electrodynamics in Dispersive Dielectric Objects Based on a Polarization Modal Expansion