Charge dissipative dielectric for cryogenic devices

Details Charge dissipative dielectric for cryogenic devices Charge dissipative dielectric for cryogenic devices

2007-07-24

2007-07-24

McGinty, Douglas (Department: 1751)

Superconductor technology: apparatus, material, process

High tc superconducting device, article, or structured stock

Coated or thin film device

C505S162000, C505S190000, C505S191000, C505S235000, C505S238000, C062S259200, C136S239000, C327S366000, C327S367000, C361S019000, C257S061000, C428S689000, C428S930000

Reexamination Certificate

active

10970539

ABSTRACT:
A Superconducting Quantum Interference Device (SQUID) is disclosed comprising a pair of resistively shunted Josephson junctions connected in parallel within a superconducting loop and biased by an external direct current (dc) source. The SQUID comprises a semiconductor substrate and at least one superconducting layer. The metal layer(s) are separated by or covered with a semiconductor material layer having the properties of a conductor at room temperature and the properties of an insulator at operating temperatures (generally less than 100 Kelvins). The properties of the semiconductor material layer greatly reduces the risk of electrostatic discharge that can damage the device during normal handling of the device at room temperature, while still providing the insulating properties desired to allow normal functioning of the device at its operating temperature. A method of manufacturing the SQUID device is also disclosed.

REFERENCES:
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patent: 6794682 (2004-09-01), Watanabe et al.
SQUID Magnetometer- http://hyperphysics.phy-astr.gsu.edu/hbase/solids/squid.html.
International Search Report, PCT/US04/34899, mailed Nov. 22, 2006.
Written Opinion of the International Searching Authority, application serial No. PCT/US04/34899, mailed Nov. 22, 2006.

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