Considerable effort is presently devoted to develop Si quantum structures for microelectronics and nanoelectronics. In particular, well-defined Si/SiO2 superlattices and quantum wells are under study. We investigate here the transport properties of a Si/SiO2 superlattice with a multiband one-particle Monte Carlo simulator. The band structure is obtained with an analytical model and the scattering mechanisms introduced in the simulator are confined optical phonons, both polar and nonpolar. Owing to the very flat shapes of the bands along the growth direction, very low drift velocities are obtained for vertical transport. However, the simulation shows that, for oblique fields, the transport properties along the vertical direction are strongly enhanced by the in-plane component of the electric field, consequently higher vertical drift velocities can be easily obtained.

Monte Carlo simulation of electron transport in Si/SiO2 superlattices: vertical transport enhanced by a parallel field / Rosini, Marcello; Jacoboni, Carlo; Ossicini, Stefano. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 66:(2002), pp. 155332-155340.

Monte Carlo simulation of electron transport in Si/SiO2 superlattices: vertical transport enhanced by a parallel field

ROSINI, Marcello;JACOBONI, Carlo;OSSICINI, Stefano
2002

Abstract

Considerable effort is presently devoted to develop Si quantum structures for microelectronics and nanoelectronics. In particular, well-defined Si/SiO2 superlattices and quantum wells are under study. We investigate here the transport properties of a Si/SiO2 superlattice with a multiband one-particle Monte Carlo simulator. The band structure is obtained with an analytical model and the scattering mechanisms introduced in the simulator are confined optical phonons, both polar and nonpolar. Owing to the very flat shapes of the bands along the growth direction, very low drift velocities are obtained for vertical transport. However, the simulation shows that, for oblique fields, the transport properties along the vertical direction are strongly enhanced by the in-plane component of the electric field, consequently higher vertical drift velocities can be easily obtained.
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155332
155340
Monte Carlo simulation of electron transport in Si/SiO2 superlattices: vertical transport enhanced by a parallel field / Rosini, Marcello; Jacoboni, Carlo; Ossicini, Stefano. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 66:(2002), pp. 155332-155340.
Rosini, Marcello; Jacoboni, Carlo; Ossicini, Stefano
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/459080
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