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Title: Condensation of helium in nanoscopic alkali wedges at zero temperature
Author: Hernández, E. Susana
Ancilotto, Francesco
Barranco Gómez, Manuel
Mayol Sánchez, Ricardo
Pi Pericay, Martí
Keywords: Líquids quàntics
Teoria del funcional de densitat
Matèria condensada
Equacions d'estat
Quantum liquids
Density functional theory
Condensed matter
Equacions d'estat
Issue Date: 2006
Publisher: The American Physical Society
Abstract: We present a complete calculation of the structure of liquid 4He confined to a concave nanoscopic wedge, as a function of the opening angle of the walls. This is achieved within a finite-range density functional formalism. The results here presented, restricted to alkali metal substrates, illustrate the change in meniscus shape from rather broad to narrow wedges on weak and strong alkali adsorbers, and we relate this change to the wetting behavior of helium on the corresponding planar substrate. As the wedge angle is varied, we find a sequence of stable states that, in the case of cesium, undergo one filling and one emptying transition at large and small openings, respectively. A computationally unambiguous criterion to determine the contact angle of 4He on cesium is also proposed.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review B, 2006, vol. 73, núm. 24, p. 245406-1-245406-6
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ISSN: 0163-1829
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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