Phys. Rev. Lett. 85, 2344–2347 (2000)Dimers in Two-Dimensional 3He- 4He MixturesReceived 20 April 2000; published in the issue dated 11 September 2000 Ground-state properties of two-dimensional 3He-4He mixtures are studied at zero temperature. A general argument based on the long-ranged attraction of the phonon exchange is given for the existence of 3He dimers in low-concentration mixtures with 4He. The binding energy of dimers ranges from milli- to microkelvins with increasing 4He density. By comparing the 3He impurity chemical potential in 4He with the one in pure 3He we conclude that at finite pressures 3He dimers form a mixture with 4He with a maximum solubility of ≈3%. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.2344
DOI:
10.1103/PhysRevLett.85.2344
PACS:
67.60.-g, 67.57.Pq, 68.15.+e, 68.35.Rh
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