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Analysis on the stability of Josephson vortices at tricrystal boundaries: A 3 φ0 /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 φ0 /2-flux case Physical Review B, 69 (212503). 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) phi0 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 3 phi0/2 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)phi0 state.

Item Type: Article
Additional Information: Published in Physical Review B, 69, 212503 (2004). © 2004 The American Physical Society.
Divisions: Faculty of Engineering and Physical Sciences > Mathematics
Depositing User: Mr Adam Field
Date Deposited: 27 May 2010 14:40
Last Modified: 23 Sep 2013 18:32
URI: http://epubs.surrey.ac.uk/id/eprint/1380

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