Controlling high-frequency collective electron dynamics via single-particle complexity
journal contributionposted on 2013-03-11, 16:06 authored by Natalia V. Alexeeva, Mark GreenawayMark Greenaway, Alexander BalanovAlexander Balanov, O. Makarovsky, A. Patane, Marat Gaifullin, Feodor Kusmartsev, T.M. Fromhold
We demonstrate, through experiment and theory, enhanced high-frequency current oscillations due to magnetically-induced conduction resonances in superlattices. Strong increase in the ac power originates from complex single-electron dynamics, characterized by abrupt resonant transitions between unbound and localized trajectories, which trigger and shape propagating charge domains. Our data demonstrate that external elds can tune the collective behavior of quantum particles by imprinting con gurable patterns in the single-particle classical phase space.