Polar Phase of 3 He in Nematic Aerogel and Quartz Tuning Fork as Sensitive Detectors of Surface Boundary Conditions

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2022-07
Major/Subject
Mcode
Degree programme
Language
en
Pages
14
Series
Journal of Low Temperature Physics
Abstract
A new superfluid phase of 3He, a polar phase, which is known to stabilize in nematic aerogel, has already led to the observation of many new phenomena. One important condition for the existence of the polar phase is a 4He coverage, which removes solid paramagnetic 3He from the surface of the aerogel strands. We report here the results of NMR experiments with superfluid 3He in nematic aerogel demonstrating the influence of 4He coverage. Simultaneous measurements of resonance properties of a quartz tuning fork immersed in liquid 3He well correlate with the NMR data.
Description
| openaire: EC/H2020/694248/EU//TOPVAC Funding Information: The experiments on Setup 1 are carried out at the Kapitza Institute (Moscow) and was supported by the Russian Science Foundation (project no. 18-12-00384). The experimental work on Setup 2 is carried out in the Low Temperature Laboratory, which is a part of the OtaNano research infrastructure of Aalto University, and was supported by the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 694248) and by Academy of Finland (project 334470). Publisher Copyright: © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Keywords
He coverage, Liquid He, Nematic aerogel, Polar phase, Quartz tuning fork, Solid He
Other note
Citation
Dmitriev , V V , Eltsov , V B , Rysti , J , Soldatov , A A & Yudin , A N 2022 , ' Polar Phase of 3 He in Nematic Aerogel and Quartz Tuning Fork as Sensitive Detectors of Surface Boundary Conditions ' , Journal of Low Temperature Physics , vol. 208 , no. 1-2 , pp. 3-16 . https://doi.org/10.1007/s10909-022-02667-2