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

E. Trabaldo; S. Ruffieux; E. Andersson; R. Arpaia; D. Montemurro; J. F. Schneiderman; A. Kalaboukhov; D. Winkler; F. Lombardi; T. Bauch

doi:10.1063/5.0001805

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

Superconductivity 2020-04-07 v1

Authors: E. Trabaldo , S. Ruffieux , E. Andersson , R. Arpaia , D. Montemurro , J. F. Schneiderman , A. Kalaboukhov , D. Winkler , F. Lombardi , T. Bauch

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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.

Keywords

yba2cu3o7-delta squid dayem bridge weak link magnetometer white noise

Cite

@article{arxiv.2001.08554,
  title  = {Properties of Grooved Dayem Bridge based YBa$_2$Cu$_3$O$_{7-\delta}$ Superconducting Quantum Interference Devices and Magnetometers},
  author = {E. Trabaldo and S. Ruffieux and E. Andersson and R. Arpaia and D. Montemurro and J. F. Schneiderman and A. Kalaboukhov and D. Winkler and F. Lombardi and T. Bauch},
  journal= {arXiv preprint arXiv:2001.08554},
  year   = {2020}
}

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

Abstract

Keywords

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