A detailed numerical study of a long Josephson tunnel junction modeled by a perturbed sine-Gordon equation demonstrates the existence of a variety of bunched soliton configurations. Thus, on the third zero-field step of the V-I characteristic, two simultaneous adjacent frequencies are generated in a narrow bias current range. The analysis of the soliton modes provides an explanation of recent experimental observations. © 1981 The American Physical Society.
|Number of pages||3|
|Journal||Physical Review B: Condensed Matter|
|Publication status||Published - 1981|