TY - JOUR
T1 - Analysis on the stability of Josephson vortices at tricrystal boundaries: A 3φ0/2-flux case
AU - Susanto, H.
AU - van Gils, S.A.
AU - Doelman, A.
AU - Derks, G.
PY - 2004
Y1 - 2004
N2 - We consider Josephson vortices at tricrystal boundaries. We discuss the specific case of a tricrystal boundary with a π junction as one of the three arms. It is recently shown that the static system admits an (n+ 1/2)φ0 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 $3φ0/2 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)φ0 state.
AB - We consider Josephson vortices at tricrystal boundaries. We discuss the specific case of a tricrystal boundary with a π junction as one of the three arms. It is recently shown that the static system admits an (n+ 1/2)φ0 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 $3φ0/2 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)φ0 state.
KW - Mathematical analysis
U2 - 10.1103/PhysRevB.69.212503
DO - 10.1103/PhysRevB.69.212503
M3 - Article
VL - 69
JO - Physical review B: Covering condensed matter and materials physics
JF - Physical review B: Covering condensed matter and materials physics
SN - 2469-9950
IS - 21
M1 - 212503
ER -