Multilayer silicene nanoribbons.
The synthesis of silicene, graphene-like silicon, has generated very strong interest. Here, we reveal the growth of high aspect ratio, perfectly straight, and aligned silicon nanoribbons, exhibiting pyramidal cross section. They are multistacks of silicene and show in angle-resolved photoemission cone-like dispersion of their π and π* bands, at the X[overline] point of their one-dimensional Brillouin zone, with Fermi velocity of ~1.3 × 10(6) m sec(-1), which is very promising for potential applications.
Consiglio Nazionale delle Ricerche -ISM, via Fosso del Cavaliere, 00133 Roma, Italy. paola.depadova@ism.cnr.it
Paola
P
De Padova
Osamu
O
Kubo
Bruno
B
Olivieri
Claudio
C
Quaresima
Tomonobu
T
Nakayama
Masakazu
M
Aono
Guy
G
Le Lay