Magnetometry with Quartz Tuning Fork

ORAL

Abstract

Quartz tuning forks are the driving force for the recent progress of atomic force microscopy. As a high Q oscillator, it is potentially a frequency modulated cantilever for magnetometry. In our study, we developed a new method for mounting tuning forks. With a bismuth single crystal attached to a free prong, the tuning fork device is driven by AC voltage and the responding current is measured at the same time. We observed sharp resonance in both the magnitude and phase of current at temperature down to 0.35K. In magnetic field up to 10 T, the phase of current shows quantum oscillations which are periodic with respect to $\frac{1}{B}$. The extracted Fermi surfaces are consistent with those of bismuth crystals.

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Authors

  • Lu Chen

    Department of Physics, University of Michigan, Ann Arbor, 450 Church Street, Ann Arbor, MI 48109

  • Fan Yu

    University of Michigan, Univ of Michigan - Ann Arbor, Department of Physics, University of Michigan, Ann Arbor, 450 Church Street, Ann Arbor, MI 48109

  • Ziji Xiang

    University of Michigan, Univ of Michigan - Ann Arbor, Department of Physics, University of Michigan, Ann Arbor, 450 Church Street, Ann Arbor, MI 48109

  • Lu Chen

    Department of Physics, University of Michigan, Ann Arbor, 450 Church Street, Ann Arbor, MI 48109

  • Tomo Asaba

    Univ. of Michigan, Univ of Michigan - Ann Arbor, Department of Physics, University of Michigan, Ann Arbor, 450 Church Street, Ann Arbor, MI 48109

  • Benjamin Lawson

    Univ of Michigan - Ann Arbor, Department of Physics, University of Michigan, Ann Arbor, 450 Church Street, Ann Arbor, MI 48109

  • Weida Wu

    Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019, Rutgers Univ, Department of Physics and Astronomy, Rutgers University

  • Lu Li

    University of Michigan, Univ of Michigan - Ann Arbor, Department of Physics, University of Michigan, Ann Arbor, 450 Church Street, Ann Arbor, MI 48109