Annealing in solid $^4$He
| dc.creator | Rittner, Ann Sophie C. | |
| dc.creator | Reppy, John D. | |
| dc.date | 2007-05-24 | |
| dc.date.accessioned | 2026-07-07T08:03:03Z | |
| dc.date.available | 2026-07-07T08:03:03Z | |
| dc.description | We have used a torsional oscillator with square cross section and a resonance frequency of 185 Hz to confirm the nonclassical rotational inertia (NCRI) discovered by Kim and Chan\cite{1,2}. We have also found a strong correlation between the NCRI signal and a high dissipation Q$^{-1}$ of 4 $\times$ 10$^{-6}$ of the oscillation above the transition temperature. Here, we present preliminary results of the annealing process in $^{4}$He at a pressure of 26 bar. When holding the temperature constant above 1 K we have observed a immediate rise in the period and a slow decay of the dissipation. The equilibrium value of Q$^{-1}$ decreases with increasing temperature. | |
| dc.description | 6 pages, 4 figures conference proceedings for QFS2007 (to be published in Journal of Low Temperature Physics) | |
| dc.identifier | https://arxiv.org/abs/0705.3488 | |
| dc.identifier | http://arxiv.org/abs/0705.3488 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/129439 | |
| dc.subject | Other Condensed Matter | |
| dc.subject | Statistical Mechanics | |
| dc.title | Annealing in solid $^4$He | |
| dc.type | text |