A nanoelectromechanical single-atom switch.
Nano Lett
; 9(8): 2940-5, 2009 Aug.
Article
em En
| MEDLINE
| ID: mdl-19639963
ABSTRACT
We have exploited the electromechanical properties of gated mechanical break junctions to form single-atom relays. The gate voltage can be used to reversibly switch between a monatomic contact with a conductance around 2e(2)/h and the tunneling regime. In tunneling, the source-drain conductance varies smoothly with gate voltage. The characteristics of the devices can be understood within a simple continuum model. It indicates that the elastic properties of the substrate facilitate the electromechanical tuning and that the details of the switching depend sensitively on the nanoscale geometry of the electrode tips.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Prognostic_studies
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article