Charging-energy corrections to macroscopic quantum tunneling in small Josephson junctions

Journal Article · Fri Feb 01 04:00:00 EST 1991 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.43.2705· OSTI ID:5619211

Shimshoni, E ^[1]; Ben-Jacob, E ^[2]

---

1. Department of Nuclear Physics, Weizmann Institute of Science, Rehovot 76100, Israel (IL)
2. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (USA) School of Physics and Astronomy, Sackler Faculty of Exact Sciences, Tel-Aviv University, Ramat-Aviv 69978, (Israel)

We study the effect of the phase dependence of the effective capacitance of Josephson junctions on macroscopic quantum tunneling. We calculate the correction due to the nonlinearity of the capacitance on the rate of escape out of a metastable well, in the presence of Ohmic dissipation, and discuss its dependence on the parameters of the junction. We show that the correction tends to enhance the escape rate and that the enhancement becomes more pronounced as the self-capacitance or the normal-state resistance of the junction is reduced.

• OSTI ID: 5619211
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:4; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAPACITANCE
ELECTRICAL PROPERTIES
HAMILTONIANS
JOSEPHSON JUNCTIONS
JUNCTIONS
MATHEMATICAL OPERATORS
MECHANICS
PHYSICAL PROPERTIES
QUANTUM MECHANICS
QUANTUM OPERATORS
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT