2001/08/04 by Kerry Kuehn, Sarabjit Mehta, Haiying Fu +6 · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #cond-mat
paper · pdf · doi:10.1103/physrevlett.88.095702
4 pages, 4 figures, revtex
arxiv created 2001/08/04 · openalex publication_date 2002/02/14 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report new measurements in four cells of the thermal boundary resistance R between copper and 4He below but near the superfluid-transition temperature T_\ensuremathλ. For 10^\ensuremath-7\ensuremath≤t\ensuremath≡1\ensuremath-T/T_\ensuremathλ\ensuremath≤10^\ensuremath-4 fits of R\phantom\rule0ex0ex=\phantom\rule0ex0exR0t^\ensuremath-xb+RB to the data yielded xb\ensuremath≃0.18, whereas a fit to theoretical values based on the renormalization-group theory yielded xb\phantom\rule0ex0ex=\phantom\rule0ex0ex0.23. Alternatively, a good fit of the theory to the data could be obtained if the amplitude of the prediction was reduced by a factor close to 2. The results raise the question whether the boundary conditions used in the theory should be modified.