ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We study, using a density-functional approach, the properties of the two-dimensional system formed by3He atoms on the surface of liquid4He, as a function of3He coverageN s , at zero temperature. We find several types of surface states accessible to the3He atoms. For small values ofN s , the surface tension σ is, as expected, linear inN s 2 . For a coverage of about half a monolayer, a new type of surface state starts being occupied, and this produces a change in the slope of σ as a function ofN s 2 and, more clearly, a step in the surface specific heat, which increases by a factor of almost two. Another step is predicted to occur for a coverage of ∼1.3 monolayer. Existing data are compatible with this structure of surface states but are not numerous enough to prove or disprove the existence of steps.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00683501
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