S. Hill et al., HIGH MAGNETIC-FIELD MILLIMETER AND SUBMILLIMETER SPECTROSCOPY OF ULTRA-HIGH MOBILITY 2D HOLE SYSTEMS, Physica. B, Condensed matter, 211(1-4), 1995, pp. 440-443
Ultra-high mobility holes in (311)A GaAs-(Ga,Al)As heterojunctions are
studied by cyclotron resonance (CR) experiments covering almost two o
rders of magnitude of magnetic field and energy. Features including se
veral distinct CR branches, discontinuities in the CR energy versus fi
eld curves, strong non-parabolicity and temperature-dependent effectiv
e masses are observed, in reasonable agreement with theoretical predic
tions.