Resonant macroscopic quantum tunneling in Josephson junctions

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Journal of Superconductivity

DOI:https://doi.org/10.1007/BF00620508· OSTI ID:171557

Ovchinnikov, Y N; Silvestrini, P; Ruggiero, B ^[1]; Barone, A ^[2]

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1. Instituto di Cibernetica del Consiglio Nazionale delle Ricerche, Arco Felice (Italy)
2. Universita di Napoli Federico II (Italy)

Many theoretical studies and some experiments have shown the possibility of several new secondary quantum effects in small Josephson junctions at low temperatures. We show that, within the well-established quantum picture of the junction, it is possible to experimentally observe sharp voltage peaks at certain current values. Such peaks are related to a resonant macroscopic quantum tunneling between levels in neighboring wells of the proper washboard potential having close energies. The proposed experiment, with respect to experiments on Coulomb blockade or Block oscillations, requires a larger junction area, reducing the technological difficulties in making the samples. 7 refs., 2 figs.

• Sponsoring Organization: USDOE
• OSTI ID: 171557
• Journal Information: Journal of Superconductivity, Journal Name: Journal of Superconductivity Journal Issue: 5 Vol. 5; ISSN 0896-1107; ISSN JOUSEH
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
99 GENERAL AND MISCELLANEOUS
JOSEPHSON JUNCTIONS
MATHEMATICAL MODELS
PHONONS
PROBABILITY
QUANTUM ELECTRONICS
TUNNEL EFFECT