title: Magnetotransport in quantum cascade detectors: analyzing the current under illumination.
abstract: Photocurrent measurements have been performed on a quantum cascade detector structure under strong magnetic field applied parallel to the growth axis. The photocurrent shows oscillations as a function of B. In order to describe that behavior, we have developed a rate equation model. The interpretation of the experimental data supports the idea that an elastic scattering contribution plays a central role in the behavior of those structures. We present a calculation of electron lifetime versus magnetic field which suggests that impurities scattering in the active region is the limiting factor. These experiments lead to a better understanding of these complex structures and give key parameters to optimize them further.
authors.affiliation: Laboratoire Pierre Aigrain, Ecole Normale Supérieure CNRS (UMR 8551), 24 rue Lhomond, 75231 Paris Cedex 05, France. louis-anne.devaulchier@lpa.ens.fr.
authors.forename: François-Régis
authors.initials: FR
authors.lastname: Jasnot
authors.forename: Nicolas
authors.initials: N
authors.lastname: Péré-Laperne
authors.forename: Louis-Anne
authors.initials: LA
authors.lastname: de Vaulchier
authors.forename: Yves
authors.initials: Y
authors.lastname: Guldner
authors.forename: Francesca
authors.initials: F
authors.lastname: Carosella
authors.forename: Robson
authors.initials: R
authors.lastname: Ferreira
authors.forename: Amandine
authors.initials: A
authors.lastname: Buffaz
authors.forename: Laetitia
authors.initials: L
authors.lastname: Doyennette
authors.forename: Vincent
authors.initials: V
authors.lastname: Berger
authors.forename: Mathieu
authors.initials: M
authors.lastname: Carras
authors.forename: Xavier
authors.initials: X
authors.lastname: Marcadet