Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-04-07
J. Appl. Phys. 108, 093704 (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Updated corrected version of the original submission
Scientific paper
We calculated the effects of spin-orbit interaction (SOI) on the energy bands, ballistic conductance and the electron-diffusion thermoelectric power of a nanowire by varying the temperature, electron density and width of the wire. The potential barriers at the edges of the wire are assumed to be very high. A consequence of the boundary conditions used in this model is determined by the energy band structure, resulting in wider plateaus when the electron density is increased due to larger energy-level separation as the higher subbands are occupied by electrons. The nonlinear dependence of the transverse confinement on position with respect to the well center excludes the "pole-like feature" in the conductance which is obtained when a harmonic potential is employed for confinement. At low temperature, the electron diffusion thermoelectric power increases linearly with T but deviates from the linear behavior for large values of T.
Balassis Antonios
Gumbs Godfrey
Huang Danhong
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