The specific heat of confined helium near the lambda point

Heat capacity measurements of the liquid helium lambda transition in confined geometries have long been in disagreement with scaling theories of second order phase transitions. The authors present measurements of a 19 micron film which extend the results of Chen and Gasparini (CG) to near macroscopi...

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Veröffentlicht in:	Journal of low temperature physics 1993-09, Vol.92 (5-6), p.353-366
Hauptverfasser:	NISSEN, J. A, CHUI, T. C. P, LIPA, J. A
Format:	Artikel
Sprache:	eng
Schlagworte:	CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Condensed matter: structure, mechanical and thermal properties EVEN-EVEN NUCLEI Exact sciences and technology HELIUM 4 HELIUM ISOTOPES ISOTOPES LAMBDA POINT LIGHT NUCLEI Normal phase of liquid 3he NUCLEI PHASE TRANSFORMATIONS PHYSICAL PROPERTIES Physics Quantum fluids and solids liquid and solid helium SPECIFIC HEAT STABLE ISOTOPES SUPERFLUIDITY TEMPERATURE RANGE TEMPERATURE RANGE 0000-0013 K THERMODYNAMIC PROPERTIES THIN FILMS TRANSITION TEMPERATURE 665420 > Superfluidity-- (1992-)
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Zusammenfassung:	Heat capacity measurements of the liquid helium lambda transition in confined geometries have long been in disagreement with scaling theories of second order phase transitions. The authors present measurements of a 19 micron film which extend the results of Chen and Gasparini (CG) to near macroscopic size. They find that the new data as well as most of the CG data are in reasonable agreement with recent renormalization group theory calculations.
ISSN:	0022-2291 1573-7357
DOI:	10.1007/BF00682296