Artículo

Boninsegni, M.; Szybisz, L. "Structure and energetics of helium films on alkali substrates" (2004) Physical Review B - Condensed Matter and Materials Physics. 70(2):024512-1-024512-9
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Abstract:

Low-temperature adsorption of 4He films on Alkali metal substrates is investigated theoretically by means of ground-state quantum Monte Carlo simulations. The most accurate potentials currently available are utilized to model the interaction of 4He atoms with the substrate. Continuous growth of film thickness as a function of chemical potential is observed on Li, Na, and K substrates. A superfluid monolayer forms on a Li substrate; on Na and K, thermodynamically stable films are a few layers thick. The uncertainties of the calculation and in the potentials, preclude a definitive conclusion on the existence of a stable 4He film on Rb. A comparison of the results of this calculation with those obtained using the Orsay-Trento density functional shows broad quantitative agreement.

Registro:

Documento: Artículo
Título:Structure and energetics of helium films on alkali substrates
Autor:Boninsegni, M.; Szybisz, L.
Filiación:Department of Physics, University of Alberta, Edmonton, Alta. T6G 2J1, Canada
Laboratorio TANDAR, Departamento de Física, CNEA, Buenos Aires, Argentina
Departamento de Física, FCEyN, Universidad de Buenos Aires, Argentina
Palabras clave:alkali; helium; lithium; potassium; rubidium; sodium; accuracy; article; calculation; chemical structure; density; energy; film; low temperature procedures; mathematical analysis; Monte Carlo method; quantum mechanics; theory
Año:2004
Volumen:70
Número:2
Página de inicio:024512
Página de fin:1-024512-9
DOI: http://dx.doi.org/10.1103/PhysRevB.70.024512
Título revista:Physical Review B - Condensed Matter and Materials Physics
Título revista abreviado:Phys. Rev. B Condens. Matter Mater. Phys.
ISSN:01631829
CODEN:PRBMD
CAS:helium, 7440-59-7; lithium, 7439-93-2; potassium, 7440-09-7; rubidium, 7440-17-7; sodium, 7440-23-5
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n2_p024512_Boninsegni

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Citas:

---------- APA ----------
Boninsegni, M. & Szybisz, L. (2004) . Structure and energetics of helium films on alkali substrates. Physical Review B - Condensed Matter and Materials Physics, 70(2), 024512-1-024512-9.
http://dx.doi.org/10.1103/PhysRevB.70.024512
---------- CHICAGO ----------
Boninsegni, M., Szybisz, L. "Structure and energetics of helium films on alkali substrates" . Physical Review B - Condensed Matter and Materials Physics 70, no. 2 (2004) : 024512-1-024512-9.
http://dx.doi.org/10.1103/PhysRevB.70.024512
---------- MLA ----------
Boninsegni, M., Szybisz, L. "Structure and energetics of helium films on alkali substrates" . Physical Review B - Condensed Matter and Materials Physics, vol. 70, no. 2, 2004, pp. 024512-1-024512-9.
http://dx.doi.org/10.1103/PhysRevB.70.024512
---------- VANCOUVER ----------
Boninsegni, M., Szybisz, L. Structure and energetics of helium films on alkali substrates. Phys. Rev. B Condens. Matter Mater. Phys. 2004;70(2):024512-1-024512-9.
http://dx.doi.org/10.1103/PhysRevB.70.024512