Spin transport and spin injection in mesoscopic metal and semiconductor devices

BJ Van Wees*, FJ Jedema, AT Filip

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    Samenvatting

    We present our recent experiments on spin dependent transport in mesoscopic systems. First we give a basic theoretical description of spin transport in multiterminal devices. It is shown that multiterminal measurements make it possible to fully isolate the spin valve signal from other spurious (magnetoresistance) effects. Experiments on spin transport in metal and low-dimensional semiconductors are discussed. Spin accumulation and spin transport are observed in permalloy/copper spin valves, allowing a determination of the spin flip lengths in copper strips(approximate to 1 mu m at 4.2 K and approximate to 350nm at room temperature). It is shown that the failure to observe spin transport in ferromagnet/semiconductor devices might be explained by "conductivity mismatch" arguments.

    Originele taal-2English
    TitelElectronic Correlations: From Meso- to Nano-Physics
    RedacteurenT Martin, G Montambaux, JT ThanhVan
    Plaats van productieCEDEX A
    UitgeverijE D P SCIENCES
    Pagina's475-484
    Aantal pagina's10
    ISBN van geprinte versie2-86883-570-8
    StatusPublished - 2001
    Evenement36th Rencontres de Moriond on Electronic Correlations - , France
    Duur: 20-jan-200127-jan-2001

    Other

    Other36th Rencontres de Moriond on Electronic Correlations
    Land/RegioFrance
    Periode20/01/200127/01/2001

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