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Analysis on the Stability of Josephson Vortices at Tricrystal Boundaries: A 3 phi(0)/2-Flux Case

Susanto, H, van Gils, S A, Doelman, A and Derks, G (2004) Analysis on the Stability of Josephson Vortices at Tricrystal Boundaries: A 3 phi(0)/2-Flux Case Physical Review B, 69 (21). ISSN 1098-0121

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Abstract

We consider Josephson vortices at tricrystal boundaries. We discuss the specific case of a tricrystal boundary with a pi junction as one of the three arms. It is recently shown that the static system admits an (n+1/2)phi(0) flux, n=0,1,2 [ Phys. Rev. B 61, 9122 (2000) ]. Here we present an analysis to calculate the linear stability of the admitted states. In particular, we calculate the stability of a 3phi(0)/2 flux. This state is of interest, since energetically this state is preferable for some combinations of Josephson lengths, but we show that in general it is linearly unstable. Finally, we propose a system that can have a stable (n+1/2)phi(0) state.

Item Type: Article
Additional Information: Published in <i>Physical Review B,</i> Vol. 69, Iss. 21. Copyright 2004 American Physical Society. Click <a href=http://prb.aps.org/>here</a> to access the journal's website.
Divisions: Faculty of Engineering and Physical Sciences > Mathematics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:08
Last Modified: 23 Sep 2013 18:27
URI: http://epubs.surrey.ac.uk/id/eprint/340

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