Self-resonant current steps of Josephson tunnel junctions in the presence of multimode oscillation

Journal Article · Thu Jan 01 04:00:00 EST 1981 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.328499· OSTI ID:6874717

Enpuku, K; Yoshida, K; Irie, F

Taking into account the presence of multimode oscillation, self-resonant current steps in current-voltage characteristics of rectangular Josephson tunnel junctions are studied theoretically. An expression for the zero-field step is obtained, which is shown to be significantly different from previous theories assuming a single-mode oscillation. For a long junction with a length larger than the Josephson penetration depth, the present theory gives the magnetic field dependence of the Fiske step, whose shape is considerably changed from the one calculated from Kulik's theory. The present theory well explains the experimental results for the zero-field step and the Fiske step of long junctions, which could not be explained by the previous theories.

• Research Organization: Department of Electronics, Kyushu University, Fukuoka 812, Japan
• OSTI ID: 6874717
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:1; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COMPARATIVE EVALUATIONS
CURRENTS
DATA
DEFORMATION
ELECTRIC CURRENTS
INFORMATION
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
MATHEMATICAL MODELS
NUMERICAL DATA
OSCILLATION MODES
RESONANCE
SUPERCONDUCTING JUNCTIONS
THEORETICAL DATA
TUNNEL EFFECT