Current self-oscillation and driving-frequency dependence of negative-effective-mass diodes

Cao, J. C.; Li, A. Z.; Lei, X. L.; Feng, S. L.
November 2001
Applied Physics Letters;11/19/2001, Vol. 79 Issue 21, p3524
Academic Journal
We have analyzed spatio-temporal current patterns and current–voltage characteristics of negative-effective-mass (NEM) p[sup +]pp[sup +] diodes driven by dc bias and terahertz (THz) electromagnetic radiation. Interesting nonlinear dynamics are presented, including current synchronization, frequency doubling, and transition to chaos. Discussions of suppressing possible chaos in NEM semiconductor devices are included. © 2001 American Institute of Physics.


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