Silicon spintronics at room temperature

S.P. Dash, S. Sharma, J.C. le Breton, R. Jansen

    Research output: Chapter in Book/Report/Conference proceedingChapterAcademic

    5 Citations (Scopus)

    Abstract

    The electrical injection and detection of spin-polarized carriers in semiconductors at room temperature has been one of the key challenges in spintronics. Exploiting spin functionality in silicon, the dominant electronic material, is particularly crucial in order to realize the next generation of information processing devices based on spin. Here we present our recent demonstration of electrical spin injection into n-type and p-type silicon from a ferromagnetic tunnel contact, the spin manipulation via the Hanle effect, and the electrical detection of the induced spin accumulation, all at room temperature. A control experiment that makes use of a non-magnetic nanolayer inserted between the ferromagnet and the tunnel barrier supports the data, proving spin injection and excluding any spurious signals. We also report Hanle effect measurements in two-terminal geometry and show that in this configuration the Hanle signal is always dominated by spin accumulation below the two individual contacts, rather than spin transport from injector to detector through the semiconductor channel. The results provide many new insights and open a platform for further exploration of spin functionality in complementary silicon devices operating at ambient temperature
    Original languageEnglish
    Title of host publicationSpintronics III
    Subtitle of host publication1-4 August 2010, San Diego, California, United States
    EditorsHenri-Jean M. Drouhin, Jean-Eric Wegrowe, Manijeh Razeqhi
    PublisherSPIE - The International Society for Optical Engineering
    Pages77600J
    Number of pages11
    ISBN (Print)9780819482563
    DOIs
    Publication statusPublished - 2010
    EventSpintronics III - San Diego, United States
    Duration: 1 Aug 20104 Aug 2010

    Publication series

    NameProceedings of SPIE
    PublisherSPIE--The International Society for Optical Engineering
    Volume7760
    ISSN (Print)0277-786X

    Conference

    ConferenceSpintronics III
    CountryUnited States
    CitySan Diego
    Period1/08/104/08/10

    Keywords

    • Spin-polarized tunneling
    • room temperature
    • Hanle effect
    • silicon spintronics
    • electrical spin injection
    • IR-77694

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  • Cite this

    Dash, S. P., Sharma, S., le Breton, J. C., & Jansen, R. (2010). Silicon spintronics at room temperature. In H-J. M. Drouhin, J-E. Wegrowe, & M. Razeqhi (Eds.), Spintronics III: 1-4 August 2010, San Diego, California, United States (pp. 77600J). (Proceedings of SPIE; Vol. 7760). SPIE - The International Society for Optical Engineering. https://doi.org/10.1117/12.860150