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Theory of voltage oscillations in ultra-small capacitance Josephson junctions

Thesis/Dissertation ·
OSTI ID:6476162
In ultra-small capacitance Josephson junctions, where the junction charging energy E/sub Q/ = (2e)/sup 2//2C is comparable to or larger than the junction coupling energy E/sub J/, the quantum-mechanical nature of the phase of the superconducting order parameter becomes important. Such quantum effects lead to novel behavior in the junction dynamics-supplying a constant current I to such a junction produces voltage of Bloch oscillations with a frequency omega/sub B/ = 2kappaI/2e, which are the result of the periodic transfer a Cooper pair of charge 2e across the junction. This thesis examines certain theoretical aspects of these Bloch oscillations.
Research Organization:
Illinois Univ., Urbana (USA)
OSTI ID:
6476162
Country of Publication:
United States
Language:
English