Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-05-09
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 9 figures
Scientific paper
Although most theoretical calculations of quantum wells with non-square profiles assume that material composition is varied continuously, it is more common in experiment to grow digital alloys. We compare the Rashba spin-orbit interaction of triangular wells using continuous, discrete, and digital alloying profiles in (001)-grown triangular InSb/Al_f(z)In_(1-f(z))Sb, finding a very large difference between digital alloying and the others, including a sign change in the Rashba spin-orbit coupling. We find that the interface contribution to the Rashba spin-orbit coupling is much larger in the continuously- and discretely-alloyed triangular quantum wells than in the digitally-alloyed triangular wells, in which it is almost completely absent. The electric field contribution, however, is quite similar in all three systems. Due to a much stronger doping dependence in all three systems, the electric field contribution dominates at higher dopings, although the very large offset due to the near absence of interface contribution in digitally-alloyed wells persists.
Mullen Kieran
Pingenot Joseph
No associations
LandOfFree
Theoretical Comparison of Rashba Spin-Orbit Coupling in Digitally, Discretely, and Continuously Alloyed Nanostructures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Theoretical Comparison of Rashba Spin-Orbit Coupling in Digitally, Discretely, and Continuously Alloyed Nanostructures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theoretical Comparison of Rashba Spin-Orbit Coupling in Digitally, Discretely, and Continuously Alloyed Nanostructures will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-278328