Spin-selective transport of electrons in DNA double helix

The experiment that the high spin selectivity and the length-dependent spin polarization are observed in double-stranded DNA [Science 331, 894 (2011)], is elucidated by considering the combination of the spin-orbit coupling, the environment-induced dephasing, and the helical symmetry. We show that t...

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Bibliographic Details
Published in:Physical review letters 2012-05, Vol.108 (21), p.218102-218102, Article 218102
Main Authors: Guo, Ai-Min, Sun, Qing-feng
Format: Article
Language:English
Subjects:
DNA - chemistry
Electrons
Models, Chemical
Nucleic Acid Conformation
Thermodynamics
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Summary:The experiment that the high spin selectivity and the length-dependent spin polarization are observed in double-stranded DNA [Science 331, 894 (2011)], is elucidated by considering the combination of the spin-orbit coupling, the environment-induced dephasing, and the helical symmetry. We show that the spin polarization in double-stranded DNA is significant even in the case of weak spin-orbit coupling, while no spin polarization appears in single-stranded DNA. Furthermore, the underlying physical mechanism and the parameter dependence of the spin polarization are studied.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.108.218102