Green's function approach to transport through a gate-all-around Si nanowire under impurity scattering

Details Green's function approach to transport through a gate-all-around Si nanowire under impurity scattering Green's function approach to transport through a gate-all-around Si nanowire under impurity scattering

2007-06-20

arxiv.org/abs/0706.2927v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 4 figures

Scientific paper

10.1103/PhysRevB.77.035313

We investigate transport properties of gate-all-around Si nanowires using non-equilibrium Green's function technique. By taking into account of the ionized impurity scattering we calculate Green's functions self-consistently and examine the effects of ionized impurity scattering on electron densities and currents. For nano-scale Si wires, it is found that, due to the impurity scattering, the local density of state profiles loose it's interference oscillations as well as is broaden and shifted. In addition, the impurity scattering gives rise to a different transconductance as functions of temperature and impurity scattering strength when compared with the transconductance without impurity scattering.

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