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).
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.
|Divisions :||Faculty of Engineering and Physical Sciences > Mathematics|
|Date :||10 June 2004|
|Identification Number :||https://doi.org/10.1103/PhysRevB.69.212503|
|Additional Information :||Published in Physical Review B, 69, 212503 (2004). © 2004 The American Physical Society.|
|Depositing User :||Mr Adam Field|
|Date Deposited :||27 May 2010 14:40|
|Last Modified :||23 Sep 2013 18:32|
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