Vacuum properties of high quality value tuning fork in high magnetic field up to 8 Tesla and at mK temperatures

27th International Conference on Low Temperature Physics

Loveko, M.^1 ; Kupka, M.^1 ; Skyba, P.^1 ; Vavrek, F.^1

Centre of Low Temperature Physics, Institute of Experimental Physics SAS, P J Afárik University Koice, Watsonova 47, Koice, Slovakia^1

关键词: High magnetic fields;    High quality;    Magnetic field magnitudes;    Mechanical resonators;    Physical nature;    Quantum liquids;    Ultra low temperatures;    Vacuum measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/3/032006/pdf
DOI  :  10.1088/1742-6596/568/3/032006

来源: IOP

【 摘 要 】

Tuning forks are very popular experimental tools widely applied in low and ultra low temperature physics as mechanical resonators and cantilevers in the study of quantum liquids, STM and AFM techniques, etc. As an added benefit, these forks being cooled, have very high Q-value, typically 106and their properties seems to be magnetic field independent. We present preliminary vacuum measurements of a commercial tuning fork oscillating at frequency 32 kHz conducted in magnetic fields up to 8 T and at temperature ∼ 10 mK. We found an additional weak damping of the tuning fork motion depending on magnetic field magnitude and we discuss physical nature of the observed phenomena.