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 language | English |
|---|---|
| Pages (from-to) | 1386–1393 |
| Number of pages | 8 |
| Journal | Fizika Nizkikh Temperatur |
| Volume | 44 |
| Issue number | 10 |
| Publication status | Published - 1 Oct 2018 |
Bibliographical note
Special IssueActual problems of quantum liquids and crystals
To the 80th birthday of E.Ya. Rudavskii and I.M. Adamenko
Guest Editors S.S. Sokolov and K.E. Nemchenko
Keywords
- Electric activity
- Electric response
- Resonance
- Second sound
- Superfluid helium