VALENCE-BAND MIXING EFFECTS ON HOLE OSCILLATIONS IN COUPLED QUANTUM-WELLS

Abstract

Valence-band mixing effects on the dynamics of the heavy- and light-hole oscillations in coupled quantum wells are described by a numerical implementation using the time-dependent Schrodinger equation with the Luttinger Hamiltonian. With a nonzero in-plane wave vector (k(parallel-to) not-equal 0), mixing tunneling (between heavy- and light-hole states) and spatial tunneling (from one well to the other) occur at the same time. This time-dependent analysis clearly resolves these two tunneling mechanisms and shows several effects which have not been addressed by previous time-independent analysis.