Ratchetlike dynamics of fluxons in annular Josephson junctions driven by biharmonic microwave fields

被引：116

作者：

Ustinov, AV ^{[1
]}

Coqui, C

Kemp, A

Zolotaryuk, Y

Salerno, M

机构：

[1] Univ Erlangen Nurnberg, Inst Phys 3, D-91058 Erlangen, Germany

[2] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, UA-03143 Kiev, Ukraine

[3] Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, Salerno, Italy

[4] Univ Salerno, INFM, I-84081 Baronissi, Salerno, Italy

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.93.087001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Experimental observation of the unidirectional motion of a topological soliton driven by a biharmonic ac force of zero mean is reported. The observation is made by measuring the current-voltage characteristics for a fluxon trapped in an annular Josephson junction that was placed into a microwave field. The dependence of the fluxon mean velocity at zero dc bias versus the phase shift between the first and second harmonic of the driving force is in qualitative agreement with theoretical expectations.

引用

页码：087001 / 1

页数：4

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