Dependence on quantum confinement of the in-plane effective mass in Ga0.47In0.53As/InP quantum wells

Experimental data obtained on undoped, Ga 0.47 In 0.53 As/InP, single quantum wells using the far infrared, optically-detected cyclotron resonance technique show a strong increase of the in-plane effective mass of electrons with increasing quantum confinement. The experimental results are compared with a model calculation in which conduction-band nonparabolicity and wave-function penetration into the barrier material have been taken into account. The roughness of the surface between the quantum well