Magneto-optical absorption in an overfilled parabolic quantum well. II. In-plane field

We extend our study of the far-infrared optical-absorption spectrum of electrons confined in an imperfect parabolic quantum well to the case of in-plane magnetic field, where the spectrum is in general continuous. Using periodic boundary conditions and the random-phase approximation, we obtain good agreement with experiment over a magnetic-field range of 5--14 T.