Abstract
Silicon nanowires assembled from clusters or etched from the bulk, connected to aluminum electrodes and passivated, are studied with large-scale local-density-functional simulations. Short wires are fully metallized by metal-induced gap states resulting in finite conductance . For longer wires nanoscale Schottky barriers develop with heights larger than the corresponding bulk value by to . Electric transport requires doping dependent gate voltages with the conductance spectra exhibiting interference resonances due to scattering of ballistic channels by the contacts.
- Received 16 November 1999
DOI:https://doi.org/10.1103/PhysRevLett.85.1958
©2000 American Physical Society