Helicoidal fields and spin polarized currents in carbon nanotube-DNA hybrids.

Diniz, G S; Latgé, A; Ulloa, S E

Diniz, G S; Latgé, A; Ulloa, S E.

Afiliación

Diniz GS; Department of Physics and Astronomy and Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, Ohio 45701, USA. ginetom@gmail.com

Phys Rev Lett ; 108(12): 126601, 2012 Mar 23.

Article en En | MEDLINE | ID: mdl-22540607

RESUMEN

We report on theoretical studies of electronic transport in the archetypical molecular hybrid formed by DNA wrapped around single-walled carbon nanotubes (CNTs). Using a Green's function formalism in a π-orbital tight-binding representation, we investigate the role that spin-orbit interactions play on the CNT in the case of the helicoidal electric field induced by the polar nature of the adsorbed DNA molecule. We find that spin polarization of the current can take place in the absence of magnetic fields, depending strongly on the direction of the wrapping and length of the helicoidal field. These findings open new routes for using CNTs in spintronic devices.

Asunto(s)

ADN/química; Modelos Químicos; Nanotubos de Carbono/química; Conductividad Eléctrica; Campos Magnéticos

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Colección: 01-internacional Base de datos: MEDLINE Asunto principal: ADN / Nanotubos de Carbono / Modelos Químicos Tipo de estudio: Prognostic_studies Idioma: En Revista: Phys Rev Lett Año: 2012 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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