Effect of the spin-orbit interaction on the band structure and conductance of quasi-one-dimensional systems

Details Effect of the spin-orbit interaction on the band structure and conductance of quasi-one-dimensional systems Effect of the spin-orbit interaction on the band structure and conductance of quasi-one-dimensional systems

1999-10-27

arxiv.org/abs/cond-mat/9910466v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

15 pages including 14 figures; RevTeX; to appear in Phys.Rev.B (15 Nov 1999)

Scientific paper

10.1103/PhysRevB.60.14272

We discuss the effect of the spin-orbit interaction on the band structure, wave functions and low temperature conductance of long quasi-one-dimensional electron systems patterned in two-dimensional electron gases (2DEG). Our model for these systems consists of a linear (Rashba) potential confinement in the direction perpendicular to the 2DEG and a parabolic confinement transverse to the 2DEG. We find that these two terms can significantly affect the band structure introducing a wave vector dependence to subband energies, producing additional subband minima and inducing anticrossings between subbands. We discuss the origin of these effects in the symmetries of the subband wave functions.

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