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Título:
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Electrical conductance in duplex DNA: Helical effects and low-frequency vibrational coupling
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Autores:
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Maciá Barber, Enrique Alfonso
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 2007-12
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Tipo = Artículo
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Resumen:
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In this work we consider the combined effect of helical structure and base-pair twist motion on charge transfer through duplex DNA at low temperatures. We present a fully analytical treatment of charge-lattice coupled dynamics in terms of nearest-neighbor tight-binding equations describing the propagation of the charge through an effective linear lattice for certain frequency values. The corresponding effective hopping terms include both helicoidal and dynamical effects in a unified way. Although base-pair motion generally reduces pi-pi stack overlapping, the coupling to certain normal modes gives rise to a significant improvement of the Landauer conductance.
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En línea:
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https://eprints.ucm.es/44539/1/Maci%C3%A1E%2008%20libre.pdf
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