Author/Authors :
Gao، نويسنده , , K.H. and LIN، نويسنده , , T. and Wei، نويسنده , , L.M and Liu، نويسنده , , X.Z and Chen، نويسنده , , X. and Yu، نويسنده , , G. and Gu، نويسنده , , Y. and Zhang، نويسنده , , Y.G. and Dai، نويسنده , , N. and Chu، نويسنده , , J.H.، نويسنده ,
Abstract :
We study the magnetotransport property of a high-density two-dimensional electron gas confined in InGaAs/InAlAs quantum well. Both beating pattern in the Shubnikov–de Hass oscillation of resistivity and weak antilocalization effect are observed. From these two effects, Rashba spin-splitting energy is extracted. The extracted Rashba spin-splitting energy shows a nonmonotonic dependence on Fermi wave vector, contrary to the prevailing linear Rashba model. This anomalous behavior can be attributed to the nonlinear Rashba spin-splitting mechanism [Yang et al., Phys. Rev. B 74 (2006) 193314].
