Localized mode interactions in 0-pi Josephson junctions

Details Localized mode interactions in 0-pi Josephson junctions Localized mode interactions in 0-pi Josephson junctions

2010-09-29

arxiv.org/abs/1009.5922v1

Nonlinear Sciences

Pattern Formation and Solitons

4 pages, to appear in Phys. Rev. B

Scientific paper

A long Josephson junction containing regions with a phase shift of pi is considered. By exploiting the defect modes due to the discontinuities present in the system, it is shown that Josephson junctions with phase-shift can be an ideal setting for studying localized mode interactions. A phase-shift configuration acting as a double-well potential is considered and shown to admit mode tunnelings between the wells. When the phase-shift configuration is periodic, it is shown that localized excitations forming bright and dark solitons can be created. Multi-mode approximations are derived confirming the numerical results.

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