2005年2月
Pinning of texture and vortices of the rotating B-like phase of superfluid He-3 confined in a 98% aerogel
PHYSICAL REVIEW LETTERS
- 巻
- 94
- 号
- 7
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.94.075301
- 出版者・発行元
- AMER PHYSICAL SOC
We have investigated pinning effects on texture and vortices of the B-like phase of superfluid He-3 in a rotating aerogel up to +/-2pi rad/s by cw-NMR. We observed deformation of the NMR spectra in rotation, due to counterflow between the superflow and the normal flow. The average intensity of the counterflow was calculated from the change of NMR spectra. The rotation dependence of the counterflow intensity is similar to the magnetization curve of hard type II superconductors or the counterflow response of He-4-II in packed powders. This counterflow behavior is in qualitative agreement with a model that vortices are pinned unless the counterflow exceeds a critical velocity v(c). The temperature independence of v(c) suggests that v(c) is associated with the expansion of primordial vortices.
- リンク情報
- ID情報
-
- DOI : 10.1103/PhysRevLett.94.075301
- ISSN : 0031-9007
- Web of Science ID : WOS:000227245700034