Temperature, pressure, and concentration dependence of the viscosity of liquid 3He-4He mixtures at low temperatures.
Temperature, pressure, and concentration dependence of the viscosity of liquid 3He-4He mixtures at low temperatures.
复制标题
低温下液态 3He-4He 混合物粘度的温度、压力和浓度依赖性。
DOI：
10.1103/physrevlett.71.2761
复制
发表时间：
1993
影响因子：
8.6
通讯作者：
Pobell
中科院分区：
文献类型：
--
作者：
König;Pobell
We have investigated the viscosity η of liquid 3 He- 4 He mixtures at 1≤T≤100 mK and 3 He concentrations 0.98%≤x≤9.5%. We report on the first measurements of its pressure dependence at 0≤p≤20 bars. At 3≤T≤10 mK, the T dependence of η agrees with the Landau Fermi-liquid theory at all investigated x and p. Our results agree with calculations using quasiparticle interaction potentials V(k) derived from solubility measurements, but they disagree with predictions from pseudopotential theory. In the ballistic regime of the mixtures the 3 He component remains in the normal fluid state to 0.13 mK
