Abstract
We generalize the Wigner formalism to include effects of an in-plane magnetic field and present theoretical study of effects of a transverse magnetic field on tunneling dynamics for resonant-tunneling diodes. We solve transport equation for the steady-state Wigner distribution function. Particle trajectories are determined in phase space as contour lines of the distribution function. From trajectories we estimate tunneling times. Discussions of magnetic field dependence and transverse momentum dependence of tunneling times are presented.