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- Trabaldo, Edoardo, 1990, et al.
(author)
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SQUID magnetometer based on Grooved Dayem nanobridges and a flux transformer
- 2020
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In: IEEE Transactions on Applied Superconductivity. - 1558-2515 .- 1051-8223. ; 30:7
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Journal article (peer-reviewed)abstract
- 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.
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