Coupling of zero sound to the real squashing mode in rotating 3B

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Journal Title
Journal ISSN
Volume Title
School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
1989
Major/Subject
Mcode
Degree programme
Language
en
Pages
620-623
Series
Physical Review Letters, Volume 63, Issue 6
Abstract
Rotation of superfluid 3B in an magnetic field enhances the coupling of the nonzero mJ substrates of the real squashing collective mode to the zero sound, and the fivefold line splitting becomes observable even when H is parallel to Ω and to the direction of sound propagation. Equilibrium vortex lattices and vortex-free states can be distinguished by their characteristic absorption spectra. The dependence of the sound attenuation on the angular velocity in magnetic fields up to 32 mT is reported; the data are qualitatively compared with theory.
Description
Keywords
superfluids, rotation, magnetic fields
Other note
Citation
Salmelin, Riitta & Pekola, Jukka & Manninen, A. J. & Torizuka, K. & Berglund, M. P. & Kyynäräinen, J. M. & Lounasmaa, O. V. & Tvalashvili, G. K. & Magradze, O. V. & Varoquaux, E. & Avenel, O. & Mineev, V. P. 1989. Coupling of zero sound to the real squashing mode in rotating 3B. Physical Review Letters. Volume 63, Issue 6. P. 620-623. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.63.620.