Relation between the condensate fraction and the surface tension of superfluid He 4
1983; American Physical Society; Volume: 27; Issue: 3 Linguagem: Inglês
10.1103/physrevb.27.1913
ISSN1095-3795
Autores Tópico(s)Atomic and Subatomic Physics Research
ResumoThe variation of the superfluid order parameter at the liquid surface contributes to the surface tension in proportion to the condensate density. This yields a prediction of the condensate fraction as a function of temperature when proper account is taken of the temperature dependence of the normal components of the surface tension, the largest of which is due to surface modes of vibration. Good agreement is obtained with recent values of the condensate fraction from neutron and x-ray scattering measurements.
Referência(s)