Properties of grooved Dayem bridge based YBa2Cu3 O 7 - δ superconducting quantum interference devices and magnetometers
Journal article, 2020
The transport properties of a YBa2Cu3 O 7 - δ 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 c = 89 K), the weak links show properties similar to superconductor-normal conductor-superconductor 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 pickup loops: at T = 77 K, magnetic field white noise levels as low as 63 fT/ Hz have been achieved.
Author
Edoardo Trabaldo
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Silvia Ruffieux
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Eric Andersson
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Riccardo Arpaia
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Polytechnic University of Milan
Domenico Montemurro
University of Naples Federico II
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Justin Schneiderman
University of Gothenburg
Alexei Kalaboukhov
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Dag Winkler
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Floriana Lombardi
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Thilo Bauch
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Applied Physics Letters
0003-6951 (ISSN) 1077-3118 (eISSN)
Vol. 116 13 132601Subject Categories
Physical Sciences
Other Physics Topics
DOI
10.1063/5.0001805