Field-induced minigap and transport with in-plane magnetic fields in double quantum wells

摘要

Theory and data are presented for the in-plane conductance in the presence of a minigap induced by an in-plane magnetic field B in a strongly coupled thin double-quantum-well structure. The conductance is calculated using a linear response theory by treating the effect of impurity scattering on the self-energy part of the Green's function in a self-consistent way. A maximum and a minimum are obtained for the B-dependent conductance in agreement with the data. Similarities between this structure and previously studied vicinal Si-inversion layers are pointed out.