Dynamic instabilities in resonant tunneling induced by a magnetic field
No Thumbnail Available
Date
1997
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
We show that the addition of a magnetic field parallel to the current induces self-sustained intrinsic current oscillations in an asymmetric double barrier structure. The oscillations are attributed to the nonlinear dynamic coupling of the current to the charge trapped in the well, and the effect of the external field over the local density of states across the system. Our results show that the system bifurcates as the field is increased, and may transit to chaos at large enough fields.