Diffusion in periodic potentials
Diffusion in periodic potentials
复制标题
周期性势的扩散
DOI:
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发表时间:
1977
期刊:
影响因子:
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通讯作者:
W. Schneider
中科院分区:
文献类型:
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作者:
W. Dieterich;I. Peschel;W. Schneider
We discuss the static and dynamic phenomena connected with the Brownian motion of a particle in a periodic potential. Specifically we consider the dynamic mobility and the dynamic structure factor. We show with numerical examples how translational and oscillatory motion show up in these quantities. The calculations are done for the onedimensional case. A main tool is the continued fraction expansion of the relevant correlation functions. It enables us, for example, to obtain numerically accurate results for the mobility in a cosine potential. Possible applications of this model lie in the fields of superionic conductors and molecular crystals with rotational diffusion.