Arrays of nano-high-transition temperature superconductor quantum interference devices

Hao Li; Han Cai; Nirjhar Sarkar; Jay C. LeFebvre; Ethan Y. Cho; Shane A. Cybart

doi:10.1063/5.0206821

Arrays of nano-high-transition temperature superconductor quantum interference devices

Hao Li, Han Cai, Nirjhar Sarkar, Jay C. LeFebvre, Ethan Y. Cho, Shane A. Cybart

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We report the fabrication and testing of arrays of nanoscale superconducting quantum interference devices (SQUIDs) directly written into a thin film of the high-transition temperature superconductor YBa₂Cu-₃O_7−δ with a focused helium ion beam. We compare three array configurations with 400 nm by 400 nm nanoSQUIDs connected in series and parallel and a two-dimensional (2D) combination of both. Our electrical transport measurements show that series arrays of three nanoSQUIDs exhibit modulation voltages greater than 1 mV and that combining the devices in parallel greatly enhances the slope of the voltage-magnetic field characteristic. A 2D array with 3 SQUIDS in series and 7 in parallel exhibited a transfer function of 5.51 mV/mT.

Original language	English
Article number	192603
Journal	Applied Physics Letters
Volume	124
Issue number	19
DOIs	https://doi.org/10.1063/5.0206821
State	Published - May 6 2024
Externally published	Yes

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title = "Arrays of nano-high-transition temperature superconductor quantum interference devices",

abstract = "We report the fabrication and testing of arrays of nanoscale superconducting quantum interference devices (SQUIDs) directly written into a thin film of the high-transition temperature superconductor YBa2Cu-3O7−δ with a focused helium ion beam. We compare three array configurations with 400 nm by 400 nm nanoSQUIDs connected in series and parallel and a two-dimensional (2D) combination of both. Our electrical transport measurements show that series arrays of three nanoSQUIDs exhibit modulation voltages greater than 1 mV and that combining the devices in parallel greatly enhances the slope of the voltage-magnetic field characteristic. A 2D array with 3 SQUIDS in series and 7 in parallel exhibited a transfer function of 5.51 mV/mT.",

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AU - Li, Hao

AU - Cai, Han

AU - Sarkar, Nirjhar

AU - LeFebvre, Jay C.

AU - Cho, Ethan Y.

AU - Cybart, Shane A.

PY - 2024/5/6

Y1 - 2024/5/6

N2 - We report the fabrication and testing of arrays of nanoscale superconducting quantum interference devices (SQUIDs) directly written into a thin film of the high-transition temperature superconductor YBa2Cu-3O7−δ with a focused helium ion beam. We compare three array configurations with 400 nm by 400 nm nanoSQUIDs connected in series and parallel and a two-dimensional (2D) combination of both. Our electrical transport measurements show that series arrays of three nanoSQUIDs exhibit modulation voltages greater than 1 mV and that combining the devices in parallel greatly enhances the slope of the voltage-magnetic field characteristic. A 2D array with 3 SQUIDS in series and 7 in parallel exhibited a transfer function of 5.51 mV/mT.

AB - We report the fabrication and testing of arrays of nanoscale superconducting quantum interference devices (SQUIDs) directly written into a thin film of the high-transition temperature superconductor YBa2Cu-3O7−δ with a focused helium ion beam. We compare three array configurations with 400 nm by 400 nm nanoSQUIDs connected in series and parallel and a two-dimensional (2D) combination of both. Our electrical transport measurements show that series arrays of three nanoSQUIDs exhibit modulation voltages greater than 1 mV and that combining the devices in parallel greatly enhances the slope of the voltage-magnetic field characteristic. A 2D array with 3 SQUIDS in series and 7 in parallel exhibited a transfer function of 5.51 mV/mT.

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Arrays of nano-high-transition temperature superconductor quantum interference devices

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