Abstract
We present intrinsic feedback and nonlinear switching in Y-branched nanotransistors. For this type of mesoscopic transistor the gate efficiency depends on the density of states in the gate electrode which is altered by voltage shifts at the drain. This nonclassical property of a Y junction introduces positive voltage feedback which leads to pronounced nonlinearities and is exploited to demonstrate highly efficient gating and bistable switching. Our results demonstrate that the efficiency of nanoscaled transistors can be enhanced dramatically by exploiting quantum effects.
- Received 8 January 2010
DOI:https://doi.org/10.1103/PhysRevB.81.153411
©2010 American Physical Society