Excitation and spin-transport of hot holes in ballistic hole magnetic microscopy

E. Haq, T. Banerjee, M.H. Siekman, J.C. Lodder, R. Jansen

    Research output: Contribution to journalArticleAcademicpeer-review

    2 Citations (Scopus)
    17 Downloads (Pure)

    Abstract

    A hybrid structure of a ferromagnetic Co/Au/Ni81Fe19 trilayer on p-type silicon is used to probe the excitation of electron-hole pairs in a ferromagnet during inelastic decay of hot electrons and the subsequent spin-dependent transport of the excited holes into the valence band of the p-type Si collector. The hole current is remarkably sensitive to magnetic fields, with a magnetocurrent of up to 250% and, unexpectedly, with a positive sign. We determine effective attenuation lengths and their magnetic field and bias voltage dependence.
    Original languageEnglish
    Article number242501
    Number of pages3
    JournalApplied physics letters
    Volume88
    Issue number24
    DOIs
    Publication statusPublished - 12 Jun 2006

    Keywords

    • TSTNE-Probe-STM: Scanning Tunneling Microscope

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