Physics – Condensed Matter – Materials Science
Scientific paper
2012-04-11
Physics
Condensed Matter
Materials Science
Scientific paper
We performed an {\it ab initio} investigation on the properties of rutile tin oxide (SnO$_{x}$) nanowires. We computed the wire properties determining the equilibrium geometries, binding energies and electronic band structures for several wire dimensions and surface facet configurations. The results allowed to establish scaling laws for the structural properties, in terms of the nanowire perimeters. The results also showed that the surface states control most of the electronic properties of the nanowires. Oxygen incorporation in the nanowire surfaces passivated the surface-related electronic states, and the resulting quantum properties and scaling laws were fully consistent with electrons confined inside the nanowire. Additionally, oxygen incorporation in the wire surfaces generated an unbalanced concentration of spin up and down electrons, leading to magnetic states for the nanowires.
Credidio Assali Lucy Vitoria
Garcia Joelson Cott
Justo Filho Joao Francisco
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