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DC Superconducting Quantum Interference Device of YBa2Cu3O7-x Step-Edge Junctions
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DC superconducting quantum interference devices (DC-SQUIDs) are made of YBa2Cu3O7-x
(YBCO) thin films by conventional photolithography and argon ion milling. The YBCO thin films are prepared on magnesia substrates with step edges by the rf magnetron sputtering method. The step-edge junctions for the SQUIDs exhibit clear DC and AC Josephson effects. The SQUIDs respond well to change of magnetic flux and have a white flux noise at 51.4 K of 8.1×10-5 Φ0/Hz1/2 at 1 Hz, 5.8×10-5 Φ0/Hz1/2 at 10 Hz and a noise increase at a low-frequency range of less than 10 Hz.
Title: DC Superconducting Quantum Interference Device of YBa2Cu3O7-x Step-Edge Junctions
Description:
DC superconducting quantum interference devices (DC-SQUIDs) are made of YBa2Cu3O7-x
(YBCO) thin films by conventional photolithography and argon ion milling.
The YBCO thin films are prepared on magnesia substrates with step edges by the rf magnetron sputtering method.
The step-edge junctions for the SQUIDs exhibit clear DC and AC Josephson effects.
The SQUIDs respond well to change of magnetic flux and have a white flux noise at 51.
4 K of 8.
1×10-5 Φ0/Hz1/2 at 1 Hz, 5.
8×10-5 Φ0/Hz1/2 at 10 Hz and a noise increase at a low-frequency range of less than 10 Hz.
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