SQUID magnetometer based on Grooved Dayem nanobridges and a flux transformer
Journal article, 2020

We report noise measurements performed on a superconducting quantum interference devices (SQUID) magnetometer implementing YBa2Cu3O7-δ grooved Dayem nanobridges as weak links. The magnetometer is realized by coupling the SQUID to a flux transformer with a two-level coupling scheme using a flip-chip approach to improve the effective area of the SQUID. The measured magnetic flux noise of the SQUID is as low as 10 μ Φ0/√Hz, which corresponds to an equivalent magnetic field white noise of 60 fT/√Hz above 100 Hz at T=77 K.

YBCO

High-Tc

magnetometer

HTS

SQUID

grooved Dayem bridge

Author

Edoardo Trabaldo

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Christoph Pfeiffer

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Eric Andersson

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Maxim Chukharkin Leonidovich

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Riccardo Arpaia

University of Naples Federico II

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

D. Montemurro

University of Naples Federico II

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

IEEE Transactions on Applied Superconductivity

1051-8223 (ISSN)

Vol. 30 7 9126148

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European Commission (Horizon 2020), 2019-05-20 -- 2020-05-19.

Evolution of nanoscale charge order in superconducting YBCO nanostructures

Swedish Research Council (VR), 2017-07-01 -- 2020-06-30.

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TASC.2020.3004896

More information

Latest update

8/31/2020