Phys. Rev. Lett. 77, 1793 - 1796 (1996)Heat Capacity Anomalies of Superfluid 4He under the Influence of a Counterflow near Tλ
Talso C. P. Chui1, David L. Goodstein2, Alexa W. Harter2, and Ranjan Mukhopadhyay2 Received 23 February 1996 We present a thermodynamic treatment of superfluid helium in the presence of an applied heat current, Q, which produces a counterflow velocity W→. We show that the heat capacity can be expressed in terms of the dependence of the superfluid density on W→. Near Tλ, both mean field theory and renormalization group theory give a divergent heat capacity with an exponent of 0.5 at a depressed transition temperature. In contrast, if W→ rather than Q is held constant, the heat capacity remains finite. ©1996 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevLett.77.1793 [ Abstract | Previous article | Next article | Issue 9 ] |
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