Determination of Interface Atomic Structure and Its Impact on Spin Transport Using Z-Contrast Microscopy and Density-Functional Theory

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dc.creatorZega, Thomas J.
dc.creatorHanbicki, Aubrey T.
dc.creatorErwin, Steven C.
dc.creatorZutic, Igor
dc.creatorKioseoglou, George
dc.creatorLi, Connie H.
dc.creatorJonker, Berend T.
dc.creatorStroud, Rhonda M.
dc.date2006-05-08
dc.date.accessioned2026-07-07T07:08:50Z
dc.date.available2026-07-07T07:08:50Z
dc.descriptionWe combine Z-contrast scanning transmission electron microscopy with density-functional-theory calculations to determine the atomic structure of the Fe/AlGaAs interface in spin-polarized light-emitting diodes. A 44% increase in spin-injection efficiency occurs after a low-temperature anneal, which produces an ordered, coherent interface consisting of a single atomic plane of alternating Fe and As atoms. First-principles transport calculations indicate that the increase in spin-injection efficiency is due to the abruptness and coherency of the annealed interface.
dc.description16 pages (including cover), 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0605202
dc.identifierhttp://arxiv.org/abs/cond-mat/0605202
dc.identifierPhys. Rev. Lett. 96, 196101 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.196101
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110851
dc.subjectMaterials Science
dc.titleDetermination of Interface Atomic Structure and Its Impact on Spin Transport Using Z-Contrast Microscopy and Density-Functional Theory
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