Geometrical effects in two-dimensional arrays of Josephson Junctions. Technical report

Technical Report · Fri May 01 04:00:00 EDT 1992

OSTI ID:7082146

Sohn, L L

We present an extensive experimental and theoretical study of Josephson-Junction arrays with both short- and long-range interaction. We first investigate the effects of current direction on the dynamical properties of rf and dc current-biased overdamped Josephson-Junction arrays with short-range interaction in the presence of magnetic flux. We show that if the Lorentz force, produced by the transport current, acting on vortices is directed towards the island barrier, the array will behave like a set of coupled one-dimensional arrays and produce only integer giant Shapiro steps. If, however, the Lorentz force is directed towards any other direction, the array will produce both integer giant and fractional giant Shapiro steps. A moving vortex model and a pendulum model are used to describe our experimental and computational results.

• Research Organization: Harvard Univ., Cambridge, MA (United States). Div. of Applied Sciences
• OSTI ID: 7082146
• Report Number(s): AD-A-252209/2/XAB; TR--33; CNN: N00014-89-J-1023
• Country of Publication: United States
• Language: English

Related Subjects

665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CURRENTS
ELECTRIC CURRENTS
ELECTRODYNAMICS
INTERACTIONS
JOSEPHSON JUNCTIONS
JUNCTIONS
LORENTZ FORCE
MAGNETIC FLUX
MATHEMATICAL MODELS
MONTE CARLO METHOD
PENDULUMS
SUPERCONDUCTING JUNCTIONS
TRANSPORT
VORTICES