Abstract:A double barrier resonant tunneling device in which the well is made of a semi-magnetic material can work as an effi cient spin fi lter. Today it is possible to make semiconductors that are ferromagnetic at room temperature. Therefore the device studied here has a great potential to be used as a polarizer, an analyzer and other spintronic applications. We discuss here the case of a Ga 1−x Mn x As/Ga 1−y Al y As system because it can be integrated into the well known AlGaAs/GaAs technology. Our tight-binding Ha… Show more
“…In previous works we focused in the spin polarized transport of holes [10][11][12], however the spin relaxation time in quantum wells is approximately 100 ns for electrons and 150 ps for holes at T % 10 K [2,13]. Our device is a heterostructure whose configuration is 40Å À Ga 0:58 Al 0:42 As=93Å À Ga 0:95 Mn 0:05 As= 40ÅÀ Ga 0:58 Al 0:42 As, it is depicted in Fig.…”
“…In previous works we focused in the spin polarized transport of holes [10][11][12], however the spin relaxation time in quantum wells is approximately 100 ns for electrons and 150 ps for holes at T % 10 K [2,13]. Our device is a heterostructure whose configuration is 40Å À Ga 0:58 Al 0:42 As=93Å À Ga 0:95 Mn 0:05 As= 40ÅÀ Ga 0:58 Al 0:42 As, it is depicted in Fig.…”
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.