Effects of capacitance on noise rounded current-voltage curves of a Josephson tunnel junction

Journal Article · Mon Nov 01 04:00:00 EST 1982 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.330119· OSTI ID:6737561

Yoshida, K

A theoretical study is made of the effects of a finite shunt capacitance of a Josephson tunnel junction on the noise rounding of its dc current-voltage (I-V) curves. A steady-state solution of the two-dimensional Fokker-Planck equation with a reasonable physical implication has been obtained with a trial function method. The solution leads to an analytical expression for dc I-V curves, which includes as limiting cases both the expression by Ambegaokar and Halperin in the zero-capacitance limit and that given by McCumber in the zero-noise limit. It is shown that the obtained dc I-V curves are in reasonable agreement with the results by computer simulation.

• Research Organization: Department of Electrical Engineering, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852, Japan
• OSTI ID: 6737561
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 53:11; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CAPACITORS
COMPUTERIZED SIMULATION
CURRENTS
DATA
DIFFERENTIAL EQUATIONS
DIRECT CURRENT
ELECTRIC CURRENTS
ELECTRICAL EQUIPMENT
ELECTRICAL PROPERTIES
EQUATIONS
EQUIPMENT
FOKKER-PLANCK EQUATION
INFORMATION
JOSEPHSON JUNCTIONS
JUNCTIONS
MATHEMATICAL MODELS
NOISE
NUMERICAL DATA
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
SIMULATION
STEADY-STATE CONDITIONS
SUPERCONDUCTING JUNCTIONS
THEORETICAL DATA
TUNNEL EFFECT
TWO-DIMENSIONAL CALCULATIONS