Optical response of a quantum dot superlattice under electric and magneticfields - art. no. 033406

We report calculations of the optical absorption of excitonic states in a l inear array of quantum dots in the presence of electric and magnetic fields aligned with the array axis. In this system, in addition to the quantum do t geometric confinement and the Stark confinement, it is also present the c onfinement induced by the magnetic field that modifies the lateral characte ristic energies of the system. The competing action between the effects of the electron-hole correlation and the different mechanisms of quantum confi nement produces a rich structure in the spectrum. We show results for a lar ge range of external field values and for different geometric confinement r egimes.