NONLINEAR APPROACH TO THE EXCITATION OF A JOSEPHSON-JUNCTION BY AN ELECTROMAGNETIC-FIELD

The excitation of a Josephson junction (J(j)) by an external electroma gnetic field has been reported. The proposed numerical model has been obtained by considering the class of quasi-periodic solutions of the u nperturbed sine-Gordon equation (sGe) and their soliton approximation. The five-phase sGe solution contains bouncing fluxons, bias and the b reather-type phase which modulate the electromagnetic field on the edg e of the junction. Using a self-consistent phenomenological model of t he tong, nondissipative J(j), the influence of the external electromag netic field to volt-ampere (I-V) characteristics is discussed.