TY - JOUR
T1 - Josephson junctions with tunable current-phase relation
AU - Lipman, A.
AU - Mints, R. G.
AU - Kleiner, R.
AU - Koelle, D.
AU - Goldobin, E.
N1 - Publisher Copyright:
© 2014 American Physical Society.
PY - 2014/11/7
Y1 - 2014/11/7
N2 - We consider 0-π Josephson junctions consisting of 0 and π regions of lengths L0 and Lπ with critical current densities jc0 and jcπ, respectively. The dependence of the Josephson current on the phase-shift averaged along the junction is derived. We show that these systems exhibit the main features of φ Josephson junctions - the ground state is doubly degenerate and the current-phase relation can be tuned in situ by applying magnetic field. In the limit of short and long 0 and π regions, the current phase relation is derived analytically. In the case of intermediate lengths of 0 and π regions, the current-phase relation is calculated numerically.
AB - We consider 0-π Josephson junctions consisting of 0 and π regions of lengths L0 and Lπ with critical current densities jc0 and jcπ, respectively. The dependence of the Josephson current on the phase-shift averaged along the junction is derived. We show that these systems exhibit the main features of φ Josephson junctions - the ground state is doubly degenerate and the current-phase relation can be tuned in situ by applying magnetic field. In the limit of short and long 0 and π regions, the current phase relation is derived analytically. In the case of intermediate lengths of 0 and π regions, the current-phase relation is calculated numerically.
UR - http://www.scopus.com/inward/record.url?scp=84911375205&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.90.184502
DO - 10.1103/PhysRevB.90.184502
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AN - SCOPUS:84911375205
SN - 1098-0121
VL - 90
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 18
M1 - 184502
ER -