Upgrading scanning tunneling microscopy with a radio-frequency modulation system for the detection of ferromagnetic resonance

POSTER

Abstract

Scanning tunneling microscope (STM) usually provides us with only static information of material surfaces. Recently, however, dynamics of a single electron spin can be successfully detected by using STM through the resonance under the irradiation of radio-frequency wave [1].
We are developing radio-frequency STM (RF-STM), intending to detect ferromagnetic resonance of nanosize ferromagnetic island structures and to generate spin waves around them. One of the key issues for the development is to generate constant-amplitude radio frequency sweeps at the tunneling junction [2]. Because of magnetostriction-induced drift, sweeping magnetic fields is not preferable. In the presentation, we will discuss the progress of the development and its performance.

[1] S. Baumann, W. Paul1, T. Choi, C. P. Lutz, A. Ardavan, A. J. Heinrich. Science 350, 417 (2015).
[2] W. Paul, S. Baumann, C. P. Lutz, A. J. Heinrich, Rev. Sci. Inst. 87, 074703 (2016).

Presenters

  • Hung-Hsiang Yang

    Institute for Solid State Physics, University of Tokyo

Authors

  • Hung-Hsiang Yang

    Institute for Solid State Physics, University of Tokyo

  • Kanta Asakawa

    Institute for Solid State Physics, University of Tokyo

  • Fumikazu Oguro

    Institute for Solid State Physics, University of Tokyo

  • Yudai Sato

    Institute for Solid State Physics, University of Tokyo

  • Susumu Takahashi

    Department of Chemistry, University of Southern California, University of Southern California

  • Yukio Hasegawa

    Institute for Solid State Physics, University of Tokyo