High-[Formula Omitted] Superconducting Quantum Interference Device Implemented on a Pulsed Tube Cooler for 1 to 50 K Materials Characterization

Here we report the fabrication and electrical characterization of high-transition temperature SQUIDs directly written by helium ion beam irradiation for use in Quantum Design's pulsed tube cooler based physical property measurement system. Our device consists of a SQUID with a direct coupled 30...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 2023-01, Vol.33 (5), p.1
Main Authors: man, Jospeh, Yoshizumi, Shozo, Cai, Han, LeFebvre, Jay, Yan-Ting, Wang, Mamedov, Tofik, Spagna, Stefano, Cybart, Shane
Format: Article
Language:English
Subjects:
Critical current (superconductivity)
Diameters
Electrical properties
Helium ions
Ion beams
Magnetic properties
Superconducting quantum interference devices
Transition temperature
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Summary:Here we report the fabrication and electrical characterization of high-transition temperature SQUIDs directly written by helium ion beam irradiation for use in Quantum Design's pulsed tube cooler based physical property measurement system. Our device consists of a SQUID with a direct coupled 300 [Formula Omitted]m diameter flux focusing pickup loop. When DC biased above the critical current, we observe a modulation in the voltage with a peak-to-peak amplitude of 500 [Formula Omitted]V, while having periodicity of 275 nT per flux quantum. The SQUID chip was mounted to the temperature-controlled system equipped with optically aligned piezo scanners which allow the accurate positioning of the sample less than 100 [Formula Omitted]m from the sensor. The system functions as a magnetic properties characterization tool which can operate over a wide temperature range (1–50 K) without thermally isolating the SQUID from the sample.
ISSN:1051-8223
1558-2515
DOI:10.1109/TASC.2023.3247996