Oscillating nematic aerogel in superfluid 3He
Abstract
We present experiments on nematic aerogel oscillating in superfluid 3He. This aerogel consists of nearly parallel mullite strands and is attached to a vibrating wire moving along the direction of the strands. Previous nuclear magnetic resonance experiments in 3He confined in similar aerogel sample have shown that the superfluid transition of 3He in aerogel occurs into the polar phase and the transition temperature (Tca) is only slightly suppressed with respect to the superfluid transition temperature of bulk 3He. In present experiments we observed a change in resonant properties of the vibrating wire at T=Tca and found that below Tca an additional resonance mode is excited which is coupled to the main resonance.
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