title: Magnetization dynamics down to a zero field in dilute (Cd,Mn)Te quantum wells.
abstract: The evolution of the magnetization in (Cd,Mn)Te quantum wells after a short pulse of magnetic field was determined from the giant Zeeman shift of spectroscopic lines. The dynamics in the absence of a static magnetic field was found to be up to 3 orders of magnitude faster than that at 1 T. Hyperfine interaction and strain are mainly responsible for the fast decay. The influence of a hole gas is clearly visible: at zero field anisotropic holes stabilize the system of Mn ions, while in a magnetic field of 1 T they are known to speed up the decay by opening an additional relaxation channel.
authors.affiliation: Institute of Experimental Physics, University of Warsaw, Hoza 69, PL-00-681 Warszawa, Poland. mgoryca@fuw.edu.pl
authors.forename: M
authors.initials: M
authors.lastname: Goryca
authors.forename: D
authors.initials: D
authors.lastname: Ferrand
authors.forename: P
authors.initials: P
authors.lastname: Kossacki
authors.forename: M
authors.initials: M
authors.lastname: Nawrocki
authors.forename: W
authors.initials: W
authors.lastname: Pacuski
authors.forename: W
authors.initials: W
authors.lastname: Maślana
authors.forename: J A
authors.initials: JA
authors.lastname: Gaj
authors.forename: S
authors.initials: S
authors.lastname: Tatarenko
authors.forename: J
authors.initials: J
authors.lastname: Cibert
authors.forename: T
authors.initials: T
authors.lastname: Wojtowicz
authors.forename: G
authors.initials: G
authors.lastname: Karczewski