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Spin-Selective Transport of Electron in DNA Double Helix

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arxiv 1201.4888 v1 pith:Y7IEJYCY submitted 2012-01-23 cond-mat.mes-hall physics.bio-ph

Spin-Selective Transport of Electron in DNA Double Helix

classification cond-mat.mes-hall physics.bio-ph
keywords spinpolarizationcouplingdouble-strandedspin-orbitappearscasecombination
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The experiment that the high spin selectivity and the length-dependent spin polarization are observed in double-stranded DNA [Science ${\bf 331}$, 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 parameters-dependence of the spin polarization are studied.

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