MAGNETOLUMINESCENCE OF SELF-ASSEMBLED INP DOTS OF VARIOUS SIZES

We present photoluminescence measurements of self-assembled InP quantu m dots on a GaAs surface (i.e., freestanding dots), under the influenc e of a high magnetic field. Reasonably sharp luminescence features are seen corresponding to the ground state, and several excited states. M agnetic-field-dependent measurements an presented and compared with ca lculations based on a finite-difference method using the envelope appr oximation. The calculations include a realistic pyramidal shape for th e dots, as well as strain. We find good agreement between theory and e xperiments.