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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Samenvatting

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.

Originele taal-2Engels
Pagina's (van-tot)1386–1393
Aantal pagina's8
TijdschriftFizika Nizkikh Temperatur
Volume44
Nummer van het tijdschrift10
StatusGepubliceerd - 1 okt 2018

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Citeer dit

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. Fizika Nizkikh Temperatur, 44(10), 1386–1393.