Low Temperature Physics: 24, 76 (1998); https://doi.org/10.1063/1.593541 (2 pages)
Физика Низких Температур: Том 24, Выпуск 2 (Февраль 1998), c. 109-111    ( к оглавлению , назад )

Theory for normal state critical Kapitza resistance of 4He

R. A. Ferrell

Center for Theoretical Physics of the Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742, USA
E-mail: rferrell@muppetn.umd.edu

J. K. Bhattacharjee

Indian Association for the Cultivation of Science, Jadavpur, Calcutta 700 032, India

S. I. Mukhin

Moscow State Institute for Steel and Alloys, Theoretical Physics Dept., Leninskii prospect 4, 117936 Moscow, Russia
E-mail: sergeimoskow@glasnet.ru

PACS: 64.60.Ht, 67.40.Hf, 67.40.Pm

Аннотация

We study a steady state, bearing a heat current, Q0, in the normal state of liquid 4He with constraining geometry, near the lambda point, at temperatures T greater than the lambda temperature, Tlambda. Critical order parameter fluctuations near the boundary are incorporated in the expression for the non-local thermal resistivity. The Kapitza resistance is manifested by the additional temperature rise at the boundary, as compared with the bulk-extrapolated value. Sensitivity of the calculations to the application of the Dirichlet boundary condition is discussed.