Fluxons interactions in a Josephson junction with a phase-shift

H. Susanto; J. A. Espínola-Rocha

doi:10.1016/j.physleta.2009.02.014

Fluxons interactions in a Josephson junction with a phase-shift

H. Susanto
, J. A. Espínola-Rocha

Mathematics

University of Massachusetts Amherst

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

Abstract

We consider a long Josephson junction with a discontinuity point characterized by a gauge phase-shift. The system is described by a modified sine-Gordon equation. We study, in particular, the interactions between a fluxon and a fractional fluxon. A perturbation theory is developed in the small phase-shift limit to understand the characteristics of the interaction. Finally, numerical computations of the threshold bias current and the threshold velocity for a fluxon running over a fractional fluxon are presented.

Original language	British English
Pages (from-to)	1387-1391
Number of pages	5
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	373
Issue number	15
DOIs	https://doi.org/10.1016/j.physleta.2009.02.014
State	Published - 30 Mar 2009

Keywords

Fluxon
Kink
Phase-shift
Sine-Gordon equations

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10.1016/j.physleta.2009.02.014

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abstract = "We consider a long Josephson junction with a discontinuity point characterized by a gauge phase-shift. The system is described by a modified sine-Gordon equation. We study, in particular, the interactions between a fluxon and a fractional fluxon. A perturbation theory is developed in the small phase-shift limit to understand the characteristics of the interaction. Finally, numerical computations of the threshold bias current and the threshold velocity for a fluxon running over a fractional fluxon are presented.",

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AU - Espínola-Rocha, J. A.

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N2 - We consider a long Josephson junction with a discontinuity point characterized by a gauge phase-shift. The system is described by a modified sine-Gordon equation. We study, in particular, the interactions between a fluxon and a fractional fluxon. A perturbation theory is developed in the small phase-shift limit to understand the characteristics of the interaction. Finally, numerical computations of the threshold bias current and the threshold velocity for a fluxon running over a fractional fluxon are presented.

AB - We consider a long Josephson junction with a discontinuity point characterized by a gauge phase-shift. The system is described by a modified sine-Gordon equation. We study, in particular, the interactions between a fluxon and a fractional fluxon. A perturbation theory is developed in the small phase-shift limit to understand the characteristics of the interaction. Finally, numerical computations of the threshold bias current and the threshold velocity for a fluxon running over a fractional fluxon are presented.

KW - Fluxon

KW - Kink

KW - Phase-shift

KW - Sine-Gordon equations

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JO - Physics Letters, Section A: General, Atomic and Solid State Physics

JF - Physics Letters, Section A: General, Atomic and Solid State Physics

IS - 15

ER -

Fluxons interactions in a Josephson junction with a phase-shift

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Keywords

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