| Current Inversion in a Temperature Ratchet with Asymmetric Unbiased External Forces |
| |
| 作者姓名： | 艾保全 谢汇章 刘良钢 |
| |
| 作者单位： | [1]School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510631 [2]Department of Physics, South China University of Technology, Guangzhou 510641 [3]Department of Physics, Zhongshan University, Guangzhou 510275 |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10275099, and the Natural Science Foundation Guangdong Province under Grant Nos 021707 and 001182. |
| |
| 摘 要： |
|
| 关 键 词： | Brownian粒子运动 对称电压 粘性介质 温度微分函数 |
| 收稿时间： | 2005-07-26 |
| 修稿时间： | 2005-07-26 |
Current Inversion in a Temperature Ratchet with Asymmetric Unbiased External Forces |
| |
| AI Bao-Quan, XIE Hui-Zhang , LIU Liang-Gang.Current Inversion in a Temperature Ratchet with Asymmetric Unbiased External Forces[J].Chinese Physics Letters,2005,22(11):2772-2775. |
| |
| Authors: | AI Bao-Quan XIE Hui-Zhang LIU Liang-Gang |
| |
| Abstract: | Transport of a Brownian particle moving in a symmetric potential is investigated in the presence of an asymmetric unbiased external force. The viscous medium is alternately in contact with the two heat reservoirs. We present the analytical expression of the net current at the quasi-steady state limit. It is found that the competition of the temporal asymmetric parameter of the driving force with the temperature difference leads to current reversals. The competition between the two opposite driving factors is a necessary but not a sufficient condition for current reversals. |
| |
| Keywords: | |
| 本文献已被 维普 等数据库收录！ |
