Piezo-driven sample rotation system with ultra-low electron temperature

Abstract

Piezo-driven rotator is convenient for tilted magnetic field experiments due to its precise angle control. However, the rotator itself and the sample mounted on it are difficult to be cooled down because of extra heat leaks and presumably bad thermal contacts from the piezo. Here, we report a piezo-driven sample rotation system designed for ultra-low temperature environment. The sample, as well as the rotating sample holder, can be cooled to as low as 25 mK by customized thermal links and thermal contacts. More importantly, the electron temperature in the electrical transport measurements can also be cooled down to 25 mK with the help of home-made filters. To demonstrate the application of our rotation system at ultra-low electron temperature, a measurement revealing tilt-induced localization and delocalization in the second Landau level of two-dimensional electron gas is provided.

22 pages, 6 figures

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• Extrinsic and Intrinsic Anomalous Metallic States in Transition Metal Dichalcogenide Ising Superconductors
• Quantum phase transitions in two-dimensional superconductors: a review on recent experimental progress
• Unconventional Superconducting Quantum Criticality in Monolayer WTe2
• Superconductor-metal quantum transition at the EuO-KTaO3 interface
• Millikelvin scanning tunneling microscope at 20/22 T with a graphite enabled stick-slip approach and an energy resolution below 8$\mu$eV: Application to conductance quantization at 20 T in single atom point contacts of Al and Au
• Implementing Microwave Impedance Microscopy in a Dilution Refrigerator
• Low-temperature environments for quantum computation and quantum simulation
• Enhancement of the superconductivity and quantum metallic state in the thin film of superconducting Kagome metal KV${}_3$Sb${}_5$
• Finite-thickness effect and spin polarization of the even-denominator fractional quantum Hall states
• Cascade of fractional quantum Hall states in 2D system
• Effectiveness of Some 0 dB Cryogenic Microwave Attenuators as Thermal Heatsinks