Ren Wei, Wang Jian, Ma Zhongshui, Guo Hong
Center of Theoretical and Computational Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China.
J Chem Phys. 2006 Oct 28;125(16):164704. doi: 10.1063/1.2359447.
Using a tight binding model, we have investigated charge transport in model DNA sequences under external ac bias. The numerical results of emittance for several model DNA sequences are found to be well described by an analytical formula, especially when the dynamic response is inductivelike. This formula can be understood from general considerations of scattering matrix theory. The temperature dependence of emittance is also studied numerically within the tight binding model, and dynamic response of the model DNA sequences can change from inductivelike to capacitivelike as temperature is varied.
使用紧束缚模型，我们研究了在外部交流偏压下模型DNA序列中的电荷传输。发现几个模型DNA序列的发射率数值结果可以用一个解析公式很好地描述，特别是当动态响应呈电感状时。这个公式可以从散射矩阵理论的一般考虑中理解。在紧束缚模型中也对发射率的温度依赖性进行了数值研究，并且随着温度的变化，模型DNA序列的动态响应可以从电感状变为电容状。
