Thermal Conductivity of Spin-Polarized liquid 3He

Daren Sawkey (1) , Laurent Puech (1) , Pierre-Etienne Wolf (1)

1 CRTBT - Centre de Recherches sur les Très Basses Températures

We present the first measurements of the thermal conductivity of spin-polarized normal liquid 3He. Using the rapid melting technique to produce nuclear polarizations up to 0.7, and a vibrating wire both as a heater and a thermometer, we show that, unlike the viscosity, the conductivity increases much less than predicted for s-wave scattering. We suggest that this might be due to a small probability for head-on collisions between quasiparticles.

Mots clés: Transport properties liq 3He; Spin-polarized hydrogen and helium; Degenerate Fermi gases; Superfluid phase of liquid 3He

Domaines: Autre [cond-mat.other]

Daren Sawkey, Laurent Puech, Pierre-Etienne Wolf. Thermal Conductivity of Spin-Polarized liquid 3He. Physical Review Letters, 2006, 96, pp.215301. ⟨10.1103/PhysRevLett.96.215301⟩. ⟨hal-00113877⟩