Observations on Thermal Coupling of Silicon Oscillators in Cryogen-Free Dilution Refrigerators

  title={Observations on Thermal Coupling of Silicon Oscillators in Cryogen-Free Dilution Refrigerators},
  author={David Schmoranzer and Sumit Kumar and Annina Luck and Eddy Collin and Xiao Liu and Thomas H. Metcalf and Glenn G. Jernigan and Andrew Fefferman},
  journal={Journal of Low Temperature Physics},
Silicon double-paddle oscillators (DPOs) have been successfully used for measuring the elastic properties of amorphous films down to 10 mK (see, e.g., Fefferman et al. in (J Low Temp Phys 187:654, 2017); Liu et al. in (Phys Rev Lett 113:025503, 2014). Until now, our group has used a wet dilution refrigerator for the lowest temperature measurements. We present measurements taken on a BlueFors cryogen-free dilution refrigerator that demonstrate an extreme sensitivity of the thermal coupling of… Expand
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