Cryogen-free one hundred microKelvin refrigerator

ORAL

Abstract

Temperature below 100 μK is achieved in a customized cryogen-free dilution refrigerator with a copper-nuclear demagnetization stage. The lowest temperature of conduction electrons of the demagnetization stage is below 100 μK as measured by a pulsed platinum NMR thermometer and the temperature can remain below 100 μK for over 10 hours. 9 T demagnetization magnetic field and 12 T research magnetic field can be controlled independently, provided by a coaxial room-temperature-bore cryogen-free magnet.

*This work was supported by NSFC Special Fund for Research on National Major Research Instruments (Grant No. 11127902).

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Presenters

  • Jiaojie Yan

    • Peking Univ

Authors

  • Jiaojie Yan

    • Peking Univ

  • Jianing Yao

    • Peking Univ

  • Vladimir Shvarts

    • Janis Research Company, LLC

  • Rui-Rui Du

    • Peking Univ

  • Xi Lin

    • International Center for Quantum Materials, Peking University
    • Peking Univ
    • International Center for Quantum Materials, School of Physics, Peking University
    • Peking University