Abstract
We have recently observed nonlinear heat transport within 30 nK of the superfluid transition temperature using heat flux, Q, in the range 0.1 < Q < 2 erg/(s cm 2 ). While Haussmann and Dohm (HD) accurately predict the initial departure of the thermal conductivity, κ, from the linear response region, κ is greater than expected very close to T λ . We anticipate that the nature of the thermal conductivity's nonlinearity may depend upon Earth's gravity in the low heat flux limit (Q < 0.5 erg/(s cm 2 )). Comparison of our data to similar data to be taken in a microgravity laboratory will provide an experimental determination of the effect of gravity on nonlinear heat transport near the superfluid transition. The microgravity measurements will also permit the first experimental test of theories that do not consider gravitational effects, such as those by HD.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
R. Haussmann and V. Dohm, Phys. Rev. Lett. 67, 3404 (1991); Z. Phys. B 87, 229 (1992).
A. Onuki, J. Low Temp. Phys. 50, 433 (1983); 55, 309 (1984); 104, 133 (1996).
P. Weichman, A. Prasad, R. Mukhopadhyay, and J. Miller, Phys. Rev. Lett. 80, 22 (1998); P. Weichman and J. Miller, preprint.
R. Haussmann, preprint.
P. Day, W. Moeur, S. McCready, D. Sergatskov, F-C. Liu, and R. Duncan, submitted to Phys. Rev. Lett.
G. Ahlers, Phys. Rev. Lett. 21, 1159 (1968), J. Kerrisk and W. Keller, Phys. Rev. 177, 341 (1969); W. Tam and G Ahlers, Phys. Rev. B 32, 5932 (1985); 33, 183 (1986); M. Dingus, F. Zhong, and H. Meyer, J. Low Temp. Phys. 65, 185 (1986).
R. A. Ferrell, N. Menyhard, H. Schmidt, F. Schwabl, and P. Szepfalusy, Phys. Rev. Lett. 18, 891 (1967); V. Dohm, Phys. Rev. B 44, 2697 (1991); V. Dohm and R. Folk, Phys. Rev. Lett. 46, 349 (1981).
R. Haussmann and V. Dohm, Phys. Rev. B 46, 6361 (1992).
R. Haussmann, private communication.
G. Ahlers, Phys. Rev. 171, 275 (1968).
F-C. Liu and G. Ahlers, Phys. Rev. Lett. 76, 1300 (1996).
D. Murphy and H. Meyer, Phys. Rev. B. 57, 536 (1998).
W. Moeur, P. Day, F-C. Liu, S. Boyd, M. Adriaans, and R. Duncan, Phys. Rev. Lett. 78, 2421 (1997).
R. Duncan, G. Ahlers, and V. Steinberg, Phys. Rev. Lett. 60, 1522 (1988).
J. Lipa, Seventy-Fifth Jubilee Conference on Helium-4, ed. J. Armitage (World Scientific, Singapore, 1983).
G. Ahlers and F-C. Liu, J. Low Temp. Phys. 105, 255 (1996).
B. Halperin, P. Hohenberg, and E. Siggia, Phys. Rev. Lett. 32, 1289 (1974); Phys. Rev. B 13, 1299 (1976).
Critical Dynamics in Microgravity, which is part of the ‘M1’ Mission Set, is in definition for flight on the International Space Station in the year 2003.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Duncan, R.V., Day, P.K., McCready, S.S. et al. Gravitational Effects on Nonlinear Heat Transport Near the Superfluid Transition in 4He. Journal of Low Temperature Physics 113, 861–866 (1998). https://doi.org/10.1023/A:1022550821984
Issue Date:
DOI: https://doi.org/10.1023/A:1022550821984