TY - JOUR
T1 - Static and dynamic properties of fluxons in a zig-zag 0 - π Josephson junction
AU - Susanto, H.
AU - Darminto,
AU - van Gils, S. A.
N1 - Funding Information:
H.S. and S.V.G. acknowledge the support of the Royal Netherlands Academy of Arts and Sciences (KNAW).
PY - 2007/1/29
Y1 - 2007/1/29
N2 - We consider a long Josephson junction with alternating 0- and π-facets with different facet lengths between the 0- and the π-parts. Depending on the combinations between the 0- and the π-facet lengths, an antiferromagnetically ordered semifluxons array can be the ground state of the system. Due to the fact that in that case there are two independent ground states, an externally introduced 2π fluxon will be splintered or fractionalized. The magnitude of the flux in the fractional fluxons is a function of the difference between the 0 and the π-facet lengths. Here, we present an analytical calculation of the flux of splintered Josephson fluxons for any combination of 0- and π-facet lengths. In the presence of an applied bias current, we show numerically that only one of the two fractional fluxons can be moved. We also consider the I-V characteristics of the ground state and the one of a 2π-fluxon in a zig-zag junction.
AB - We consider a long Josephson junction with alternating 0- and π-facets with different facet lengths between the 0- and the π-parts. Depending on the combinations between the 0- and the π-facet lengths, an antiferromagnetically ordered semifluxons array can be the ground state of the system. Due to the fact that in that case there are two independent ground states, an externally introduced 2π fluxon will be splintered or fractionalized. The magnitude of the flux in the fractional fluxons is a function of the difference between the 0 and the π-facet lengths. Here, we present an analytical calculation of the flux of splintered Josephson fluxons for any combination of 0- and π-facet lengths. In the presence of an applied bias current, we show numerically that only one of the two fractional fluxons can be moved. We also consider the I-V characteristics of the ground state and the one of a 2π-fluxon in a zig-zag junction.
KW - Fluxon splintering
KW - Josephson junction
KW - Sine-Gordon equation
UR - http://www.scopus.com/inward/record.url?scp=33845313021&partnerID=8YFLogxK
U2 - 10.1016/j.physleta.2006.09.044
DO - 10.1016/j.physleta.2006.09.044
M3 - Article
AN - SCOPUS:33845313021
SN - 0375-9601
VL - 361
SP - 270
EP - 276
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 3
ER -