We report the effect of the insertion of an InP/In 0.53Ga 47As Interface on the Rashba spin-orbit interaction in In 0.52Al 0.48As/In 0.53Ga 0.47As quantum wells. A small spin split-off energy in InP produces a very intriguing band lineup in the valence bands in this system. With or without this InP layer above the In 0.53Ga 47As well, the overall values of the spin-orbit coupling constant α turned out to be enhanced or diminished for samples with the front- or back-doping position, respectively. These experimental results, using weak antilocalization analysis, are compared with the results of the k·p theory. The actual conditions of the interfaces and materials should account for the quantitative difference in magnitude between the measurements and calculations.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2005 Jan|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics