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Observation of Macroscopic Quantum Effects in YBCO Thin Film Microbridge Rings

Published online by Cambridge University Press:  26 February 2011

Y. Huang ,
H. Jiang ,
A. Widom  and
C. Vittoria
Y. Huang
Affiliation:
Northeastern University, Boston, MA 02115
H. Jiang
Affiliation:
Northeastern University, Boston, MA 02115
A. Widom
Affiliation:
Northeastern University, Boston, MA 02115
C. Vittoria
Affiliation:
Northeastern University, Boston, MA 02115
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Abstract

Thin film rings with microbridge were constructed using high Tc Y-Ba-Cu-O super-conducting thin films which were made by laser ablation on the single crystal MgO(100) substrates. The thickness of the films is 5000 Å. The weak links were biased with an AC induced current. The resulting electron pair charges on the weak links were monitored by an output voltage. The charge stored on the link (as a function of the input bias voltage) is consistent with that of a “macroscopic quantum pendulum”

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 275: Symposium S – Layered Superconductors: Fabrication, Properties and Applications , 1992 , 783
Copyright
Copyright © Materials Research Society 1992

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References

REFerences

[1.] Prance, R. J., et. al., Il Nuovo Cimento 106B; (1991).Google Scholar
[2.] Srivasrava, Y. and Widom, A., “Quantum Electrodynamic Circuits” Physics Reports 148. 1 Sec 7.4 (1987).Google Scholar
[3.] Prance, R. J. et. al., “Quantum Dualities in Weak link Circuits” in “Macroscopic Quantum Phenomena” Editors, Clark, T. D. et. al., World Scientific (1990).Google Scholar