Abstract
We show that, owing to a decrease in the dipolar energy, the soft cores of the nonsingular, doubly quantized vortices in 3HeA2 expand and become ellipsoidal upon approaching the A1 phase. Results of zero sound experiments in rotating 3HeA2, very near the A2A1 transition, support this conclusion. The experimental data was analyzed by a geometrical acoustics method, using theoretically calculated attenuation and velocity parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 631-632 |
| Number of pages | 2 |
| Journal | Physica B: Physics of Condensed Matter |
| Volume | 165-166 |
| Issue number | PART 1 |
| DOIs | |
| Publication status | Published - Aug 1990 |
| MoE publication type | A1 Journal article-refereed |
Funding
ACKNOWLEDGEMENTS We thank J. Pekola, K. Torizuka, and A. Manninen for providing their experimental data prior to publication. This work was supported by the Academy of Finland and by the USSR Academy of Sciences through project ROTA.
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