Imaging spin dynamics in ferromagnets using a single spin scanning magnetometer

ORAL

Abstract

Probing spin dynamics in ferromagnets at nanometer scale has drawn increasing attention due to the potential usage of spin waves as information carriers in future spintronic devices. Moreover, coupled with solid-state spin qubits, the spin waves may serve as information transducer between distant qubits. Here, we study spin dynamics in ferromagnets using a nitrogen-vacancy (NV) spin qubit in diamond. With the help of a single spin scanning magnetometer that hosts a NV center at the probe tip, we are able to image DC and AC magnetic field generated from the magnetic samples. For instance, we study dynamic magnetic properties of a thin Py square by mapping out Rabi oscillation frequency. From the comparison with static magnetic image, we find very distinct spin dynamics particularly around the vortex. We will further discuss on-going efforts of imaging spin waves in various ferromagnetic materials.

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Publication: The manuscript is being prepared.

Presenters

  • Myeongwon Lee

    • Department of Physics, Korea University

Authors

  • Myeongwon Lee

    • Department of Physics, Korea University

  • Yuhan Lee

    • Department of Physics, Korea University

  • Taek-Hyeon Lee

    • Department of Physics, Korea Advanced Institute of Science and Technology

  • Alec Jenkins

    • University of California, Santa Barbara; University of Colorado

  • Soo-Gil Lee

    • Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology

  • Ha-Reem Kim

    • Department of Physics, Korea University

  • Hong-Gyu Park

    • Department of Physics, Korea University; KU-KIST Graduate School of Converging Science and Technology, Korea University

  • Byong-Guk Park

    • Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology

  • Ania C Jayich

    • University of California, Santa Barbara
    • University of California Santa Barbara
    • Department of Physics, University of California Santa Barbara, Santa Barbara, California 93106, USA

  • Kab-Jin Kim

    • Department of Physics, Korea Advanced Institute of Science and Technology

  • Donghun Lee

    • Korea Univ
    • Department of Physics, Korea University