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Heat capacity anomalies of superfluid He-4 under the influence of a counterflow near T-lambda

Chui, Talso C. P. and Goodstein, David L. and Harter, Alexa W. and Mukhopadhyay, Ranjan (1996) Heat capacity anomalies of superfluid He-4 under the influence of a counterflow near T-lambda. Physical Review Letters, 77 (9). pp. 1793-1796. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:CHUprl96

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Abstract

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.


Item Type:Article
Additional Information:©1996 The American Physical Society. Received 23 February 1996. We would like to acknowledge helpful discussions with Dr. Yury Mukharsky, Anoop Prasad, and Professor Peter Weichman. T.C.P.C. and A.W.H. would like to thank NASA Microgravity Science and Application Division for its support.
Subject Keywords:TRANSITION; HELIUM; FLOW; DEPRESSION; PRESSURE; POINT; SOUND
Record Number:CaltechAUTHORS:CHUprl96
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:CHUprl96
Alternative URL:http://dx.doi.org/10.1103/PhysRevLett.77.1793
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6005
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Nov 2006
Last Modified:26 Dec 2012 09:16

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