Quartz tuning forks as high magnetic field thermometers in liquid <sup>3</sup>He.

ORAL

Abstract

Many experiments at the NHMFL High B/T Facility take advantage of the thermal properties of liquid 3He to cool experiments by immersion in the liquid[1], the temperature (T) of which can be measured by a miniature quartz tuning fork[2]. Here, the use of these tuning forks in magnetic fields up to 16 T and for T ≤ 1 mK is reported. A novel thermometer, containing a tuning fork in a small volume of 3He has also been developed, and its thermal response time (50 s) and geometry offers a new path to realizing specific heat and thermal transport measurements in high magnetic fields and ultralow temperatures.

[1] For example, see T. Knighton et al., Phys. Rev. B 97 (2018) 085135.
[2] A. M. Guenault et al., Phys. Rev. B 100 (2019) 104526

*Work performed at the NHMFL High B/T Facility, which is supported by NSF DMR-1644779 and the State of Florida.

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Presenters

  • Andrew Woods

    • University of Florida

Authors

  • Andrew Woods

    • University of Florida

  • Alexander Donald

    • University of Florida

  • Lucia Steinke

    • University of Florida
    • Department of Physics and NHMFL, University of Florida

  • Mark Meisel

    • University of Florida
    • Department of Physics and National High Magnetic Field Laboratory, University of Florida