Abstract:
High field electronic transport through a strongly-coupled superlattice (SL) with a shunting
side layer is numerically studied using a novel drift-diffusion model. The bias voltage corresponds
to an average electric field in the negative differential conductivity (NDC) region of the intrinsic
current-field (I ยก F) curve of the SL, a condition that generally implies space charge instability.
Key structural parameters associated with both the shunt layer and SL are identified for which
the shunt layer stabilizes a uniform electric field profile. These results support the possibility to
realize a SL-based THz oscillator with a carefully designed structure.
Duke University * Arts & Sciences * Physics * Faculty * Staff * Grad * Researchers * Reload * Login
Copyright (c) 2001-2002 by Duke University Physics.