DNA分子能带结构与电子态研究  

Study on the energy levels and electronic states of DNA molecules

作　　者：宋骏[1] 陈雷[1] 刘德胜[1] 解士杰[1] 

机构地区：[1]山东大学物理与微电子学院

出　　处：《物理学报》2004年第8期2792-2795,共4页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :90 10 3 0 3 4);山东省自然科学基金 (批准号 :Y2 0 0 1A0 5 )资助的课题~~

摘　　要：DNA分子链内的巡游电子数与其结构和位形密切相关 ,可变的电子数会导致这类软物质费米面处能带结构的变化 .在紧束缚近似下 ,计入电子 晶格的相互作用 ,计算了DNA分子不同巡游电子数下的能带结构及态密度 。The itinerancy of π electrons included in DNA molecules is related to their structures and configurations. The variation of the itinerant electrons will affect the band structure of this kind of soft material to some extent. In the frame work of the tight binding model, we calculated the band structure and the electronic density of states of a DNA chain. It was found that the band gap at the Fermi level depends sensitively upon the number of the itinerant electrons. The conductance of the DNA molecule in different orders of duplex pairs with possible combinations was discussed.

关 键 词：DNA分子链 能带结构 电晶相互作用 态密度 

分 类 号：O561[理学—原子与分子物理]