Spin transport in an InAs based two-dimensional electron gas nanochannel

Hyunjung Yi, H. C. Koo, W. Y. Kim, Joonyeon Chang, S. H. Han, S. H. Lim

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A spin device composed of two ferromagnetic electrodes and InAs two-dimensional electron gas was fabricated. Submicron spin channels were defined to enhance spin transport characteristics. Electrical transport measurement was performed to detect spin-polarized electrons. In potentiometric geometry a voltage change, ΔV=0.17 mV, sensed by a ferromagnetic electrode was obtained at 5 and 77 K. In the nonlocal method ΔV=0.057 mV, which resulted from accumulated spin-polarized electrons, was obtained at 77 K. The main reason for theses large signals is that the short and narrow spin channels increase the possibility for spin-polarized electrons to arrive at the spin detector.

    Original languageEnglish
    Article number10D502
    JournalJournal of Applied Physics
    Volume97
    Issue number10
    DOIs
    Publication statusPublished - 2005 May 15

    Bibliographical note

    Funding Information:
    This work was supported by the VISION 21 PROGRAM of KIST.

    ASJC Scopus subject areas

    • General Physics and Astronomy

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