泡利不相容原理
凝聚态物理
电导率
态密度
电阻率和电导率
偏压
声子
散射
联轴节(管道)
载流子密度
非线性系统
功能(生物学)
载流子
材料科学
电压
物理
量子力学
生物
进化生物学
兴奋剂
冶金
作者
A. V. Malyshev,Elena Díaz,F. Domínguez-Adame,V. A. Malyshev
出处
期刊:Universidad Complutense Madrid - Library Open Repository
日期:2009-06-24
被引量:1
标识
DOI:10.1088/0953-8984/21/33/335105
摘要
We present a theoretical analysis of the environment effects on charge transport in double-stranded synthetic poly(G)-poly(C) DNA molecules attached to two ideal leads. Coupling of the DNA to the environment results in two effects: (i) localization of carrier functions due to the static disorder and (ii) phonon-induced scattering of the carrier between these localized states, resulting in hopping conductivity. A nonlinear Pauli master equation for populations of localized states is used to describe the hopping transport and calculate the electric current as a function of the applied bias. We demonstrate that, although the electronic gap in the density of states shrinks as the disorder increases, the voltage gap in the $I-V$ characteristics becomes wider. Simple physical explanation of this effect is provided.
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