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DOI: 10.1103/PhysRevB.69.144502

Two-fluxon dynamics in an annular Josephson junction

Abdumalikov, Abdufarrukh A.; Malomed, Boris A.; Ustinov, Alexey V.

Two-fluxon state in an annular Josephson junction in the presence of external magnetic field is studied analytically, numerically, and experimentally. We obtain an analytical expression for the potential of interaction between the fluxons moving at arbitrary velocities (without the use of the “nonrelativistic” approximation). Treating the fluxons as quasiparticles, we then derive equations of motion for them. Direct simulations of the full extended sine-Gordon equation are in good agreement with results produced by the analytical model, in a relevant parameter region. Experimental data qualitatively agree with the numerical results.

Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2004
Sprache Englisch
Identifikator ISSN: 0163-1829, 0556-2805, 1094-1622, 1095-3795, 1098-0121, 1550-235X, 2469-9950, 2469-9969
KITopen ID: 1000074297
Erschienen in Physical review / B
Band 69
Heft 14
Seiten 144502-1-144502-6
Bemerkung zur Veröffentlichung arXiv : Superconductivity (cond-mat.supr-con)
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