Ballistic hole magnetic microscopy

E. Ul Haq, T. Banerjee, Martin Herman Siekman, J.C. Lodder, R. Jansen

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    17 Citations (Scopus)


    A technique to study nanoscale spin transport of holes is presented: ballistic hole magnetic microscopy. The tip of a scanning tunneling microscope is used to inject hot electrons into a ferromagnetic heterostructure, where inelastic decay creates a distribution of electron-hole pairs. Spin-dependent transmission of the excited hot holes into an underlying p-type semiconductor collector induces a hole current in the valence band of the semiconductor, with magnetocurrent values up to 180%. The spin-filtering of holes is used to obtain local hysteresis loops and magnetic imaging with spatial resolution better than 30 nm.
    Original languageUndefined
    Article number082502
    Pages (from-to)082502-1
    Number of pages3
    JournalApplied physics letters
    Publication statusPublished - 2005


    • EWI-5446
    • SMI-NE: From 2006 in EWI-NE
    • IR-62958
    • TSTNE-Probe-STM: Scanning Tunneling Microscope
    • METIS-226846

    Cite this

    Ul Haq, E., Banerjee, T., Siekman, M. H., Lodder, J. C., & Jansen, R. (2005). Ballistic hole magnetic microscopy. Applied physics letters, 86, 082502-1. [082502].