Équipe de Recherche en Physique de l'Information Quantique


Abstract = {As part of a Kapitza resistance study, the thermal resistance between the phonon and3He quasiparticle excitations in three dilute3He-4He mixtures (0.03%, 0.1%, and 0.3%3He) has been measured over the temperature range 20-50 mK. The results are compared with a theory based upon the Baym-Ebner interaction between the excitations. The temperature dependences agree, but the measured resistance is smaller than the theoretical resistance by a factor of ∼2 that varies inversely with concentration. This concentration-dependent phonon-quasiparticle coupling discrepancy is consistent with the results of recent heat pulse absorption experiments by Husson et al. An indirect measurement was made of the same thermal resistance in3He-4He mixtures confined within the pores of a submicrometer sintered copper powder, with the results confirming a size-effect model for the resistance. {\copyright} 1984 Plenum Publishing Corporation.},
Author = {Guillon, F. and Harrison, J.P. and Sachrajda, A. and Atkins, D.},
Document_Type = {Article},
Journal = {Journal of Low Temperature Physics},
Number = {1-2},
Pages = {95-121},
Source = {Scopus},
Title = {Thermal resistance between phonon and quasiparticle excitations in dilute mixtures of3He in4He},
Url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0021510921&partnerID=40&md5=6a3bbfc09d7ea915011024570800e5b2},
Volume = {57},
Year = {1984},
Bdsk-Url-1 = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0021510921&partnerID=40&md5=6a3bbfc09d7ea915011024570800e5b2}}