๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Dynamical simulations of fractional giant Shapiro steps

โœ Scribed by S.P. Benz; J.U. Free; M.S. Rzchowski; M. Tinkham; C.J. Lobb; M. Octavio

Book ID
104356498
Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
361 KB
Volume
165-166
Category
Article
ISSN
0921-4526

No coin nor oath required. For personal study only.

โœฆ Synopsis

We have numerically simulated 20 arrays of resistively shunted Josephson junctions in the presence of commensurate magnetic. fi~lds and alternatin~and direct currents. Fract!onal gi~nt Shapiro steps appear in the simulated current-voltage charactenstIcs at values determmed by the external magnetIc field, In agreement with recent experimental measurements. We summarize previous results that confirm the model of vortex motion previously proposed by Benz, et al., and present further results at low frequencies that indicate the possibility of subJumnonic fractional steps.

๐Ÿ“œ SIMILAR VOLUMES

Fractional giant Shapiro steps in 2D Jos
Fractional giant Shapiro steps in 2D Josephson arrays
โœ S.P. Benz; M.S. Rzchowski; M. Tinkham; C.J. Lobb ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 376 KB

Radio-frequency signals were applied to 1000 by 1000 arrays of SNS Josephson junctions and giant Shapiro steps were observed at voltages 1000 times that expected for a single junction, Vn=nNhv/2e, where N=I000 is the number of junctions in the direction of applied current. For certain perpendicular

Observation of integer and fractional gi
Observation of integer and fractional giant Shapiro steps in arrays of SNS Josephson junctions
โœ H.C. Lee; D.B. Mast; R.S. Newrock; L. Bortner; K. Brown; F.P. Esposito; D.C. Har ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 362 KB

We observe giant Shapiro steps in the I-V curves of NxM arrays of SNS Josephson junctions; these steps occur at N times the single junction voltage. Both integer and fractional giant steps are observed as a function of temperature, external magnetic field, and rf current. The fractional steps occur

Simulations of Shapiro steps in Josephso
Simulations of Shapiro steps in Josephson junction arrays
โœ D. Stroud; I.-J. Hwang; S. Ryu ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 288 KB

This paper briefly reviews giant and fractional giant Shapiro steps in Josephson junction arrays. The effects of AC frequency, AC amplitude, finite temperature, disorder, and self-fields due to screening currents, are briefly discussed. A variety of numerical examples are presented for Shapiro steps