Magnetoconductance of a spin-polarized electron along a curved one-dimensional wire

Abstract

In this paper, we revisit our transport studies on the motion of a spin- polarized electron along a curved quantum wire under the presence of a uniform perpendicular magnetic field B and both the Rashba and Dresselhaus spin-orbit couplings (SOCs). Then from the previously derived output transmission coefficients, we numerically determine the magnetoconductance of the electron motion along the curved wire. Our results agree from our earlier report that for large effective SOCs, the effects of B on spin switching is reduced. Moreover, we found that for a given energy E, the desired high MC ratio can be achieved by tuning B. Finally, with large R the MC reduces significantly due to adiabatic transport.