Observation of breathers in Josephson ladders

被引：337
|
作者：
Binder, P
Abraimov, D
Ustinov, AV
Flach, S
Zolotaryuk, Y
机构：
[1] Univ Erlangen Nurnberg, Inst Phys 3, D-91058 Erlangen, Germany
[2] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 04期
关键词：
D O I：
10.1103/PhysRevLett.84.745
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report on the observation of spatially localized excitations in a ladder of small Josephson junctions. The excitations are whirling states which persist under a spatially homogeneous force due to the bias current. These states of the ladder are visualized using a tow temperature scanning laser microscopy. We also compute breather solutions with high accuracy in corresponding model equations. The stability analysis of these solutions is used to interpret the measured patterns in the I-V characteristics.
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页码：745 / 748
页数：4
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