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AbstractAbstract
[en] We have investigated triplet p-wave superfluid 3He in nano-porous material of aerogel. In this report, we show two typical samples of aerogel, one of which was deformed uniaxially when the sample was cooled down and the other was cooled down under a freely-suspended condition. These two samples showed a large difference in the cw-NMR spectrum but otherwise all other properties of superfluidity such as the A-like and B-like phases observed and their superfluid transition temperature Tcaero and the A-B phase transition temperature TABaero and even the critical velocity above which the quantized vortex was introduced were very similar with each other. The difference in texture observed by cw-NMR is caused by a slight deformation of the porous aerogel. This global anisotropy determined the texture. We studied the orientation effects of global anisotropy, comparing it with orientation effects of counterflow under rotation of the sample. We first observed Coherent Quantum Precession (CQP) of magnetization in A-like phase in uniaxially deformed aerogel. The CQP has not been yet observed in bulk A phase. This observation indicates that the CQP is stabilized by global anisotropy of aerogel and A-like phase sustains spin supercurrent. (author)
Source
28 refs., 14 figs.
Record Type
Journal Article
Journal
Toyota Kenkyu Hokoku; ISSN 0372-039X;
; (no.61); p. 99-107

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