Spin Fluctuations in A-like Superfluid Phase of 3He in Aerogel

被引：0
作者：
G. A. Baramidze
G. A. Kharadze
机构：
[1] Andronikashvili Institute of Physics,
来源：
Journal of Low Temperature Physics | 2009年 / 157卷
关键词：
Superfluid ; He; Aerogel; Spin fluctuations; 05.07.Ln; 05.70.Jk; 64;
D O I：
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学科分类号：
摘要：
The frequency spectrum of the spin fluctuations δS(t) superimposed on the coherently precessing spin modes in the A-like superfluid phase in aerogel is analysed. It is shown that the low amplitude spin fluctuations could be most easily observed in the case of an uni-axially deformed aerogel. It is demonstrated, in particular, that for axially stretched (radially squeezed) aerogel described by the U(1)LIM model the fourth order harmonic in δSz(t) is erased, in contrast with what is expected for the long range Leggett orbital configuration in the 3He-A (ABM state).
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