Per citar aquest document: http://ddd.uab.cat/record/114356
Metallic and semimetallic silicon <100> nanowires
Rurali, Riccardo (Université Paul Sabatier. Laboratoire Collisions, Agrégats, Réactivité)
Lorente, N. (Université Paul Sabatier. Laboratoire Collisions, Agrégats, Réactivité)
American Physical Society

Data: 2005
Resum: Silicon nanowires grown along the <100> direction with a bulk Si core are studied with density-functional calculations. Two surface reconstructions prevail after exploration of a large fraction of the phase space of nanowire reconstructions. Despite their energetical equivalence, one of the reconstructions is found to be strongly metallic while the other one is semimetallic. This electronic-structure behavior is dictated by the particular surface states of each reconstruction. These results imply that doping is not required in order to obtain good conducting Si nanowires.
Drets: Tots els drets reservats.
Llengua: Anglès
Document: article ; publishedVersion
Publicat a: Physical review letters, Vol. 94, Issue 2 (January 2005) , p. 026805, ISSN 0031-9007

DOI: 10.1103/PhysRevLett.94.026805


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