We study the origin of subharmonic synchronization in arrays consisting of few over-damped Josephson junctions. We show that for asymmetric arrays, the evolution equations contain second (or higher) order derivatives or non-sinusoidal terms, both leading to fractional Shapiro steps in presence of external ac drive .
Valizadeh,A R , Kolahchi,M R and Straley,J P . (2019). Dynamics of coupled Josephson junctions in an asymmetric triangular single plaquette. Iranian Journal of Physics Research, 9(1), 112-115.
MLA
Valizadeh,A R , , Kolahchi,M R , and Straley,J P . "Dynamics of coupled Josephson junctions in an asymmetric triangular single plaquette", Iranian Journal of Physics Research, 9, 1, 2019, 112-115.
HARVARD
Valizadeh A R, Kolahchi M R, Straley J P. (2019). 'Dynamics of coupled Josephson junctions in an asymmetric triangular single plaquette', Iranian Journal of Physics Research, 9(1), pp. 112-115.
CHICAGO
A R Valizadeh, M R Kolahchi and J P Straley, "Dynamics of coupled Josephson junctions in an asymmetric triangular single plaquette," Iranian Journal of Physics Research, 9 1 (2019): 112-115,
VANCOUVER
Valizadeh A R, Kolahchi M R, Straley J P. Dynamics of coupled Josephson junctions in an asymmetric triangular single plaquette. Iranian Journal of Physics Research. 2019;9(1):112-115 (In Persian).