Abstract
Kelvin-waves play an important role for the dissipation of quantum turbulence at low temperatures. Here the plasma resonance of two-dimensional (2D) snowballs trapped below the surface of rotating superfluid 4He are measured for the first time in order to examine whether 2D snowballs could be a new probe for study of vortex dynamics. Below 200 mK, a positive shift of the resonant frequency f1 and linewidth broadening are observed as small variations in the absorption spectra under rotation. Both f1 and the linewidth Δf increase linearly with the rotation speed, and the slopes of f1 and Δf against the rotation speed have no temperature dependence. The increase of Δf suggests that an additional dissipation is caused by the coupling between the snowballs and vortices. We provide a qualitative explanation for the linear increase of Δf in the context of Kelvin-waves excited by the motion of snowballs.
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23 February 2022
A Correction to this paper has been published: https://doi.org/10.1007/s10909-022-02683-2
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This work is partially supported by Grant-in-Aid for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
The original version of this article was revised due to a retrospective open access order.
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Takahashi, D., Ikegami, H. & Kono, K. Transport Properties of Two-dimensional Snowballs Below the Surface of 4He-II Under Rotation. J Low Temp Phys 158, 391–396 (2010). https://doi.org/10.1007/s10909-009-9957-0
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DOI: https://doi.org/10.1007/s10909-009-9957-0