The temperature-dependence of the hopping conductivity of DNA
文献类型：期刊论文
| 作者 | Shen, L; Ye, YJ; Ladik, J |
| 刊名 | SOLID STATE COMMUNICATIONS
 |
| 出版日期 | 2002 |
| 卷号 | 121期号:1页码:35-38 |
| 关键词 | semiconductors phonons tunnelling |
| ISSN号 | 0038-1098 |
| 文献子类 | Article |
| 英文摘要 | Using the matrix block negative factor counting and inverse iteration methods, the electronic density of states (DOS) and wave functions belonging to the energy levels in the valence band regions of an aperiodic DNA base pair stack were determined. From these the hopping frequencies, and with the aid of the latter applying a random walk theory the frequency-dependent complex hopping conductivity of the stack was calculated. The calculations were performed for the frequency range 10(8) s(-1) less than or equal to omega less than or equal to 10(11) s(-1) and temperature range 60 K < T < 360 K. According to the results obtained Lit high frequencies and temperatures, the conductivity indicates variable range hopping (exponential temperature dependence, decrease of the conductivity with decreasing frequencies). The room-temperature conductivity value at high frequency is similar to5 x 10(-1) Ohm(-1) cm(-1) which agrees well with recent experiments. The experimental and theoretical temperature-dependence at high frequencies also agrees well with each other. At lower frequencies (similar to10(8) s(-1)), the conductivity at lower T values doesn't depend on the temperature. This indicates that in the 60 < T < 150 region at omega approximate to 10(8) s(-1) the dominant mechanism of the conductivity is probably tunneling. (C) 2001 Elsevier Science Ltd. All rights reserved. |
| WOS关键词 | STOCHASTIC TRANSPORT ; BAND STRUCTURES ; POLYMERS |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000173091000008 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.183/handle/2S10ELR8/274414]  |
| 专题 | 中国科学院上海药物研究所 |
| 通讯作者 | Ladik, J |
| 作者单位 | 1.Cornell Univ, Dept Chem & Biol Chem, Ithaca, NY 14853 USA 2.Univ Erlangen Nurnberg, Inst Theoret Chem, Lab Natl Fdn Canc Res, D-91058 Erlangen, Germany 3.Chinese Acad Sci, Shanghai Inst Mat Med, Drug Discovery & Design Ctr, Shanghai 200031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shen, L,Ye, YJ,Ladik, J. The temperature-dependence of the hopping conductivity of DNA[J]. SOLID STATE COMMUNICATIONS,2002,121(1):35-38. |
| APA | Shen, L,Ye, YJ,&Ladik, J.(2002).The temperature-dependence of the hopping conductivity of DNA.SOLID STATE COMMUNICATIONS,121(1),35-38. |
| MLA | Shen, L,et al."The temperature-dependence of the hopping conductivity of DNA".SOLID STATE COMMUNICATIONS 121.1(2002):35-38. |
入库方式： OAI收割
来源：上海药物研究所
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