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
