Multiple current reversals in forced inhomogeneous ratchets

被引：48

作者：

Dan, D

Mahato, MC

Jayannavar, AM

机构：

[1] Inst Phys, Bhubaneswar 751005, Orissa, India

[2] Guru Ghasidas Univ, Dept Phys, Bilaspur 495009, India

来源：

PHYSICAL REVIEW E | 2001年 / 63卷 / 05期

关键词：

D O I：

10.1103/PhysRevE.63.056307

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Transport properties of overdamped Brownian particles in a rocked thermal ratchet with space dependent friction coefficient is studied. By tuning the parameters, the direction of current exhibit multiple reversals, both as a function of the thermal noise strength as well as the amplitude of rocking force. Current reversals also occur under deterministic conditions and exhibit intriguing structure. All these results arise due to mutual interplay between potential asymmetry, noise, driving frequency, and inhomogeneous friction.

引用

收藏

页码：563071 / 563075

页数：5

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