Non-linear stationary spin-waves in superfluid He-3-B at ultra-low temperatures

Chen, A. S. and Bunkov, Yuri M. and Godfrin, H. and Schanen, Roch and Scheffler, F. (1998) Non-linear stationary spin-waves in superfluid He-3-B at ultra-low temperatures. Journal of Low Temperature Physics, 113 (5-6). pp. 693-698. ISSN 0022-2291

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We have performed detailed CW NMR measurements on superfluid He-3-B in order to investigate stationary spin-wave modes in a texture veil. Our results at high temperatures are consistent with previous work. However, we find that the spin dynamics is profoundly modified, even for small excitation amplitudes, for temperatures on the order of 200 mu K, substantially lower than the limit reached in previous investigations. We report the observation of nea-linear spin-waves at ultra-low temperatures and their characterization in terms of a third-order anharmonic oscillator.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Low Temperature Physics
Uncontrolled Keywords:
?? precessiongeneral materials scienceatomic and molecular physics, and opticscondensed matter physics ??
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Deposited On:
09 Sep 2015 06:32
Last Modified:
15 Jul 2024 15:23