Characterization of Two Fast-Turnaround Dry Dilution Refrigerators for Scanning Probe Microscopy
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Sciences (SIMES); Stanford Univ., CA (United States); Stanford University
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States). Stanford Institute for Materials and Energy Sciences (SIMES); Stanford Univ., CA (United States)
- Univ. of Illinois at Urbana-Champaign, IL (United States)
- Stanford Univ., CA (United States)
Low-temperature scanning probe microscopes (SPMs) are critical for the study of quantum materials and quantum information science. Due to the rising costs of helium, cryogen-free cryostats have become increasingly desirable. However, they typically suffer from comparatively worse vibrations than cryogen-based systems, necessitating the understanding and mitigation of vibrations for SPM applications. Here, in this work, we demonstrate the construction of two cryogen-free dilution refrigerator SPMs with minimal modifications to the factory default and we systematically characterize their vibrational performance. We measure the absolute vibrations at the microscope stage with geophones and use both microwave impedance microscopy and a scanning single-electron transistor to independently measure tip-sample vibrations. Additionally, we implement customized filtering and thermal anchoring schemes and characterize the cooling power at the scanning stage and the tip electron temperature. This work serves as a reference to researchers interested in cryogen-free SPMs, as such characterization is not standardized in the literature or available from manufacturers.
- Research Organization:
- Univ. of Illinois at Urbana-Champaign, IL (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); United Cleanup Oak Ridge LLC (UCOR), Oak Ridge, TN (United States). UCOR - URS/CH2M
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0021238
- OSTI ID:
- 2337841
- Journal Information:
- Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 1-2 Vol. 215; ISSN 0022-2291
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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