Highly extended image states around nanotubes.

Granger, Brian E; Král, Petr; Sadeghpour, H R; Shapiro, Moshe

Granger, Brian E; Král, Petr; Sadeghpour, H R; Shapiro, Moshe.

Afiliación

Granger BE; ITAMP, Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts 02138, USA. bgranger@cfa.harvard.edu

Phys Rev Lett ; 89(13): 135506, 2002 Sep 23.

Article en En | MEDLINE | ID: mdl-12225038

RESUMEN

We predict that freely suspended, linear molecular conductors or dielectrics, such as carbon nanotubes, can support electronic states that are localized far from the surface. These "tubular image states" are formed in extended potential wells resulting from the tug of war between the external electron's attraction to its image charge in the nanotube, and its repulsion from the tube due to its transverse angular momentum. The displacement of these states (>10 nm) away from the surface prevents their wave functions from collapsing, resulting in long lifetimes at low temperatures. We predict that tubular image states with binding energies of 1-10 meV can be formed via radiative recombination.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2002 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

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