THEORY AND EXPERIMENT ON ELECTROMAGNETIC-WAVE-PROPAGATION VELOCITIES IN STACKED SUPERCONDUCTING TUNNEL STRUCTURES

Citation
S. Sakai et al., THEORY AND EXPERIMENT ON ELECTROMAGNETIC-WAVE-PROPAGATION VELOCITIES IN STACKED SUPERCONDUCTING TUNNEL STRUCTURES, Physical review. B, Condensed matter, 50(17), 1994, pp. 12905-12914
Citations number
17
Categorie Soggetti
Physics, Condensed Matter
ISSN journal
01631829
Volume
50
Issue
17
Year of publication
1994
Pages
12905 - 12914
Database
ISI
SICI code
0163-1829(1994)50:17<12905:TAEOEV>2.0.ZU;2-S
Abstract
Characteristic velocities of the electromagnetic waves propagating in vertically stacked Josephson transmission are theoretically discussed. An equation for solving n velocities of the waves in an n Josephson-j unction stack is derived. The solutions of two- and threefold stacks a re especially focused on. Furthermore, under the assumption that all p arameters of the layers are equal, analytic solutions for a generic N- fold stack are presented. The velocities of the waves in two- and thre e-junction stacks by Nb-Al-AlOx-Nb systems are experimentally obtained by measuring the cavity resonance (Fiske step) modes. Comparison of t he theory with the experimental data reveals good quantitative agreeme nt.