Electric response induced by second sound in superfluid helium

Hideki Yayama, Yugo Nishimura, Hiroka Uchiyama, Hiroshi Kawai, Jean Paul Van Woensel, Ali G. Hafez

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Abstract

The electric response of superfluid helium was measured when a second sound standing wave was generated in a resonator cavity. The results were qualitatively in agreement with that of other research laboratories, but the normalized signal strength was one order of magnitude larger reflecting the difference in electrode structure. The temporal phase difference between the electric oscillation and the temperature oscillation was measured and compared with the analysis. The result excluded a hypothesis that the electric response was induced by the velocities of the relative motion of normal and superfluid components of liquid helium. We suggested a hypothetical explanation of the electric response based on the oscillation of chemical potential of electrons in helium atoms. The effect of an external dc electric field was examined and no effect was observed. The heater power dependence of the temperature oscillation and the electric oscillation showed the qualitative agreement with the original experiment.

Original languageEnglish
Pages (from-to)1090-1096
Number of pages7
JournalLow Temperature Physics
Volume44
Issue number10
DOIs
Publication statusPublished - Oct 1 2018

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Yayama, H., Nishimura, Y., Uchiyama, H., Kawai, H., Van Woensel, J. P., & Hafez, A. G. (2018). Electric response induced by second sound in superfluid helium. Low Temperature Physics, 44(10), 1090-1096. https://doi.org/10.1063/1.5055857