Ratchet potential for fluxons in Josephson-junction arrays

被引：85

作者：

Falo, F ^{[1
]}

Martínez, PJ

Mazo, JJ

Cilla, S

机构：

[1] Univ Zaragoza, Dept Fis Mat Condensada, Zaragoza 50009, Spain

[2] Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Zaragoza 50009, Spain

[3] Univ Zaragoza, Dept Fis Aplicada, Zaragoza 50009, Spain

[4] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

来源：

EUROPHYSICS LETTERS | 1999年 / 45卷 / 06期

关键词：

D O I：

10.1209/epl/i1999-00224-x

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We propose a simple configuration of a one-dimensional parallel array of Josephson junctions in which the pinning potential for trapped fluxons lacks inversion symmetry (ratchet potential). This system can be modelised by a set of non-linear pendula with alternating lengths and asymmetric harmonic couplings. We show, by molecular dynamics simulation, that fluxons behave as single particles in which the predictions for overdamped thermal ratchets can be easily verified.

引用

页码：700 / 706

页数：7

共 22 条

[11] NUMERICAL-INTEGRATION OF STOCHASTIC DIFFERENTIAL-EQUATIONS .2. [J].

GREENSIDE, HS ;

HELFAND, E .

BELL SYSTEM TECHNICAL JOURNAL, 1981, 60 (08) :1927-1940

[12]

Haenggi P., 1996, Nonlinear physics of complex systems. Current status and future trends, P294

[13] Modeling molecular motors [J].

Julicher, F ;

Ajdari, A ;

Prost, J .

REVIEWS OF MODERN PHYSICS, 1997, 69 (04) :1269-1281

[14] FORCED THERMAL RATCHETS [J].

MAGNASCO, MO .

PHYSICAL REVIEW LETTERS, 1993, 71 (10) :1477-1481

[15] Thermal ratchets in 1+1 dimensions [J].

Marchesoni, F .

PHYSICAL REVIEW LETTERS, 1996, 77 (12) :2364-2367

[16] THERMAL ROUNDING OF THE CHARGE-DENSITY-WAVE DEPINNING TRANSITION [J].

MIDDLETON, AA .

PHYSICAL REVIEW B, 1992, 45 (16) :9465-9468

[17] ASYMMETRIC PUMPING OF PARTICLES [J].

PROST, J ;

CHAUWIN, JF ;

PELITI, L ;

AJDARI, A .

PHYSICAL REVIEW LETTERS, 1994, 72 (16) :2652-2655

[18] Reversal effects in stochastic kink dynamics [J].

Savin, AV ;

Tsironis, GP ;

Zolotaryuk, AV .

PHYSICAL REVIEW E, 1997, 56 (03) :2457-2466

[19] FLUXON DYNAMICS IN ONE-DIMENSIONAL JOSEPHSON-JUNCTION ARRAYS [J].

USTINOV, AV ;

CIRILLO, M ;

MALOMED, BA .

PHYSICAL REVIEW B, 1993, 47 (13) :8357-8360

[20] Relapse of Graves' disease after oestrogen therapy for climacteric symptoms [J].

Watanobe, H ;

Kawabe, H .

CLINICAL ENDOCRINOLOGY, 1996, 45 (04) :505-505

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