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Magnetic Properties of Short Period InGaMnAs/InGaAs Superlattices | | J. Sadowski
; R. Mathieu
; P. Svedlindh
; J. Kanski
; M. Karlsteen
; K. Swiatek
; J. Z. Domagala
; | | Date: |
9 Jul 2002 | | Journal: | Acta Phys. Pol. A 102, 687 (2002) | | Subject: | Materials Science | cond-mat.mtrl-sci | | Abstract: | We have observed a paramagnetic-to-ferromagnetic phase transition in short period InGaMnAs/InGaAs superlattices. The thicknesses of magnetic InGaMnAs layers in the structures studied was chosen to be 4 or 8 molecular layers (12 AA or 24 AA). The nonmagnetic InGaAs spacer layers are 12 AA thick. The In content of InGaMnAs and InGaAs layers was chosen in such a way that magnetic layers were: deep potential wells, high potential barriers or shallow potential wells. For superlattices with 8 monolayer thick InGaMnAs magnetic layers and 4 monolayer thick InGaAs nonmagnetic spacers the temperatures of paramagnetic-to-ferromagnetic phase transition do not depend on the band offsets between InGaMnAs and InGaAs adjusted by the In content. | | Source: | arXiv, cond-mat/0207232 | | Services: | Forum | Review | PDF | Favorites | |
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