Spin Polarized STM/STS on Mn Thin Films on W(110) Using a Bulk Cr Tip

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  • HAZE Masahiro
    The Institute for Solid State Physics, The University of Tokyo
  • YOSHIDA Yasuo
    The Institute for Solid State Physics, The University of Tokyo
  • HASEGAWA Yukio
    The Institute for Solid State Physics, The University of Tokyo

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Other Title
  • バルクCr探針を用いたW(110)上のMn薄膜のスピン偏極STM/STS観察
  • バルク Crタンシン オ モチイタ W(110)ウエ ノ Mn ハクマク ノ スピンヘンキョク STM/STS カンサツ

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Abstract

We performed spin-polarized scanning tunneling microscopy and spectroscopy measurements on a double layer (DL) Mn film formed on a W(110) substrate, which has a complicated spin arrangement called a conical spin spiral structure. As a spin-polarized tip for this study, we use a bulk Cr tip that can be made relatively easily and maintains the spin polarization longer than conventional magnetic thin film coated W tips do. We successfully observed images with a striped pattern on the Mn DL, which is attributed to the previously reported spin structure. The tunneling conductance measurements with non-spin polarized and spin polarized tips clarify the electronic structure and the strong spin polarization around the Fermi level of the Mn DL, respectively.

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 36 (8), 403-407, 2015

    The Surface Science Society of Japan

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