Open AccessTemperature-Dependent Spatial Order in Superfluid and NormalHe 4
Author(s) -
H. N. Robkoff,
D. A. Ewen,
R. B. Hallock
Publication year - 1979
Publication title -
physical review letters
Language(s) - English
Resource type - Journals
eISSN - 1079-7114
pISSN - 0031-9007
DOI - 10.1103/physrevlett.43.2006
Subject(s) - lambda , physics , order (exchange) , superfluidity , condensed matter physics , quantum mechanics , finance , economics
Measurements of the structure factor S (k) for /sup 4/He at constant density above and below T/sub lambda/. The results show a clear loss of spatial order on cooling through T/sub lambda/. Application of the theory of Cummings, Hyland, and Rowlands to the data allows a measurement of the condensate fraction for He II.
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