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Gap Caused by Strong Pairing in the Ladder Model of DNA Molecules |
| HU Dong-Sheng1;ZHU Chen-Ping1;ZHANG Long-Qiang1;HE Da-Ren2;WANG Bing-Hong3 |
| 1Department of Applied Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 2100162College of Physical Science and Technology, Yangzhou University, Yangzhou 2250013Department of Modern Physics and Institute of Theoretical Physics, University of Science and Technology of China, Hefei 230026 |
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| Cite this article: |
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HU Dong-Sheng, ZHU Chen-Ping, ZHANG Long-Qiang et al 2008 Chin. Phys. Lett. 25 1822-1824 |
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Abstract By directly diagonalizing the Hamiltonian of the ladder model of deoxyribonucleic acid (DNA) molecules, the density of states is obtained. It is found that DNA behaves as a conductor when the interchain hopping is smaller than twice the intrachain one, otherwise, DNA behaves as a semiconductor.
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| Keywords:
71.20.Rv
85.65.+h
87.15.-v
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Received: 27 November 2007
Published: 29 April 2008
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| PACS: |
71.20.Rv
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(Polymers and organic compounds)
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85.65.+h
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(Molecular electronic devices)
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87.15.-v
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(Biomolecules: structure and physical properties)
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