Electrically switched superconductors

Details Electrically switched superconductors Electrically switched superconductors

1989-05-23

1991-07-09

Hille, Rolf

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

357 4, 357 5, H01L 4500, H01L 3922, H01B 1200

Patent

active

050306170

ABSTRACT:
An existing superconducting material is rendered nonsuperconducting without a change in temperature by the generation of phonons which breakup the electron pairing within the superconducting material. The phonons are generated by a piezoelectric film deposited on the superconducting material. A high frequency signal is used to energize the piezoelectric film resulting in piezoelectric acoustic phonon generation within the superconducting material.

REFERENCES:
patent: 4334158 (1982-06-01), Faris
patent: 4589001 (1986-05-01), Sakai et al.
patent: 4831421 (1989-05-01), Gallagher et al.
"Self-Heating Hotspots in Superconducting Thin-Film Microbrides", Skocpol et al, J. Appl. Phys., vol. 45, #9, Sep. 1974, pp. 4054-4066.
"Quasiparticle-Injection-Induced Superconducting Weak Lumps", Wong et al, Phys. Rev Lett, vol. 37, #3, Jul. 19, 1976, pp. 150-153.
"Solid State Physics", Kittel, 5th Edition, Wiley & Sons, 1976, pp. 112-113.
"Deposition of Superconducting Y-Ba-Cu-O Films at 400.degree. C. without Post-Annealing", Witanachi et al, Appl. Phys. Lett., vol. 53, #3, Jul. 18, 1988, pp. 234-236.

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