We investigate the effects of a linear resonator on the high-frequency dynamics of electrons in devices exhibiting negative differential conductance. We show that the resonator strongly affects bothâ€¦ (More)

We study a resistively shunted semiconductor superlattice subject to a highfrequency electric field. Using a balance equation approach that incorporates the influence of the electric circuit, weâ€¦ (More)

â€“ We show that space-charge instabilities (electric field domains) in semiconductor superlattices are the attribute of absolute negative conductance induced by small constant and large alternatingâ€¦ (More)

We theoretically study the feasibility of amplification and generation of terahertz radiation in dc-ac-driven semiconductor superlattices in the absence of electric domains. We find that if inâ€¦ (More)

Kirill N. Alekseev, Ethan H. Cannon, Jonathan C. McKinney, Feodor V. Kusmartsev, and D.K. Campbell Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green St., Urbana, ILâ€¦ (More)

We consider a high-frequency response of electrons in a single miniband of superlattice subject to dc and ac electric fields. We show that Bragg reflections in miniband result in a parametricâ€¦ (More)

Physical review. E, Statistical, nonlinear, andâ€¦

2005

We examine the conditions for appearance of a symmetry breaking bifurcation in damped and periodically driven pendulums in the case of strong damping. We show that symmetry breaking, unlike otherâ€¦ (More)

We theoretically analyze the influence of magnetic field on small-signal absorption and gain in a superlattice. We predict a very large and tunable THz gain due to nonlinear cyclotron oscillations inâ€¦ (More)

We consider the motion of ballistic electrons within a superlattice miniband under the influence of an alternating electric field. We show that the interaction of electrons with the self-consistentâ€¦ (More)