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Giant Enhancement of Diffusion in a Tilted Egg-Carton Potential |
| Yang Song, Jing-Dong Bao** |
Department of Physics, Beijing Normal University, Beijing 100875
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| Cite this article: |
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Yang Song, Jing-Dong Bao 2016 Chin. Phys. Lett. 33 020202 |
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Abstract Diffusion of a particle on a tilted periodic surface such as the egg-carton potential is investigated using Langevin Monte Carlo simulations. It is found that the effective diffusion coefficient of the particle related to the one-dimensional case can be greatly enhanced, when the local minima of such potential along the $x$ and $y$ directions are close to vanishing. A relation between the group diffusion and the phase diffusion is used to analyze the enhancement mechanism of the diffusion.
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Received: 20 October 2015
Published: 26 February 2016
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