Direct current hopping conductance along DNA chain

• 来源期刊: 中国物理（英文版）
• 关键词: DNA chain hoping transport DC conductivity compositional disorder
• 年，卷（期）: 2007,（3）
• 页码范围: 862-867
• 页数: 6页
• 语种: 英文

摘要

This paper proposes a model of direct current(DC) electron hopping transport in DNA,in which DNA is considered as a binary one-dimensional disordered system.To quantitatively study the DC conductivity in DNA,it numerically calculates the DC conductivity of DNA chains with difierent parameter values.The result shows that the DC conductivity of DNA chain increases with the increase of temperature.And the conductivity of DNA chain is depended on the probability P.which represents the degree of compositional disorder in a DNA sequence to some extent.For P＜0.5,the conductivity of DNA chain decreases with the increase of P,while for P≥0.5,the conductivity increases with the increase of p.The DC conductivity in DNA chain also varies with the change of the electric field,it presents non-Ohm's law conductivity characteristics.