title: Controlling high-frequency collective electron dynamics via single-particle complexity.
abstract: 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 fields can tune the collective behavior of quantum particles by imprinting configurable patterns in the single-particle classical phase space.
authors.affiliation: School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.
authors.forename: N
authors.initials: N
authors.lastname: Alexeeva
authors.forename: M T
authors.initials: MT
authors.lastname: Greenaway
authors.forename: A G
authors.initials: AG
authors.lastname: Balanov
authors.forename: O
authors.initials: O
authors.lastname: Makarovsky
authors.forename: A
authors.initials: A
authors.lastname: Patanè
authors.forename: M B
authors.initials: MB
authors.lastname: Gaifullin
authors.forename: F
authors.initials: F
authors.lastname: Kusmartsev
authors.forename: T M
authors.initials: TM
authors.lastname: Fromhold