Dynamics of accelerated Josephson junctions
Abstract
The behavior of largearea Josephson tunneling junctions (JTJ) is analyzed theoretically, taking the theory of general relativity into account. The covariant sineGordon equation for a largearea JTJ of undefined contour is established and adapted to the specific case of a rotating ringshaped JTJ. The dynamics of the soliton as rotation rate is varied are investigated. It is shown that soliton angular velocity, conserved with respect to the inertial reference frame in an ideal, vacuumbarrier ring JTJ when ring angular velocity is changed, will be decreased in a real ring JTJ due to permeability/permittivity variation and junction inhomogeneity, resulting in possible soliton pinning. The difficulties implied for the construction of a Josephson inertial rotation sensor (analogous to optical rotation sensors based on the Sagnac effect) and possible techniques for overcoming them are discussed.
 Publication:

Archiv Elektronik und Uebertragungstechnik
 Pub Date:
 June 1983
 Bibcode:
 1983ArElU..37..153R
 Keywords:

 Josephson Junctions;
 Ring Currents;
 Solitary Waves;
 Superconductors;
 Tunnel Diodes;
 Wave Propagation;
 Angular Velocity;
 Inertial Reference Systems;
 Propagation Velocity;
 Thin Films;
 Electronics and Electrical Engineering