Efficiency and current reversals in spatially inhomogeneous ratchets

被引：22

作者：

Dan, D

Jayannavar, AM

Mahato, MC

机构：

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

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

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2000年 / 14卷 / 15期

关键词：

D O I：

10.1142/S0217979200001291

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Efficiency of generation of net unidirectional current in an adiabatically driven symmetric periodic potential system is studied. The efficiency shows a maximum, in the case of an inhomogeneous system with spatially varying periodic friction coefficient, as a function of temperature. The ratchet is not most efficient when it gives maximum current. The direction of current may also be reversed as a function of noise strength when, instead, an asymmetric periodic potential is considered.

引用

页码：1585 / 1591

页数：7

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