Vortex structure and Josephson supercurrents in stacked double Josephson junctions

S. Song; P. Auvil; M. Ulmer; J. Ketterson

doi:10.1103/PhysRevB.53.R6018

Vortex structure and Josephson supercurrents in stacked double Josephson junctions

S. Song, P. Auvil, M. Ulmer, J. Ketterson

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

In Josephson-junction stacks consisting of two junctions having identical maximum Josephson supercurrent (Formula presented), the measured (Formula presented) vs external magnetic flux (Formula presented) characteristics exhibit two distinct oscillation periods with the oscillation period for (Formula presented) being smaller than that when (Formula presented), where (Formula presented) is the flux quantum. The observations provide clear evidence that a structural phase transformation to a triangular vortex lattice occurs with increasing (Formula presented).

Original language	English (US)
Pages (from-to)	R6018-R6021
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	53
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.53.R6018
State	Published - Jan 1 1996

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.53.R6018

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abstract = "In Josephson-junction stacks consisting of two junctions having identical maximum Josephson supercurrent (Formula presented), the measured (Formula presented) vs external magnetic flux (Formula presented) characteristics exhibit two distinct oscillation periods with the oscillation period for (Formula presented) being smaller than that when (Formula presented), where (Formula presented) is the flux quantum. The observations provide clear evidence that a structural phase transformation to a triangular vortex lattice occurs with increasing (Formula presented).",

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