Cyclotron-resonance line splitting in heavily doped p-type GaAs heterojunctions
Abstract
In this paper, we report on submillimeter magneto-absorption studies of heavily doped (1 0 0) AlGaAs/GaAs heterojunctions. We found that the CR spectra consist of two branches with cyclotron-resonance effective masses of m=0.18 mo and 0.373 mo. These values are close to those predicted theoretically, and can be ascribed to the inversion asymmetry-induced spin splitting. In addition, we observed anticrossing features in the CR spectra. We discuss a possible origin of such CR line behavior as a coupling of light and heavy holes.
- Publication:
-
Physica E Low-Dimensional Systems and Nanostructures
- Pub Date:
- December 2008
- DOI:
- 10.1016/j.physe.2008.07.004
- Bibcode:
- 2008PhyE...41..224V
- Keywords:
-
- 76.40.+b;
- 78.30.Fs;
- 73.21.Fg;
- Diamagnetic and cyclotron resonances;
- III-V and II-VI semiconductors;
- Quantum wells