ABSTRACT
Resonances between hybrid magneto-electric subbands in InAs/AlSb quantum wells have been studied in the Voigt configuration. The simultaneous observation of both spin-conserving and spin-flip transitions allows us to determine experimentally the influence of the depolarization effect on the resonance energy and the lineshape. We demonstrate that the spin-conserving transitions are driven by the in-plane magnetic field and that the relevant optical matrix elements can be deduced from the magnetic field dependence of the oscillator strength. The spin-flip resonances, on the other hand, are made possible by the bulk inversion-asymmetry of InAs.
