Artículo
Barranco, M.; Hernández, E.S.; Mayol, R.; Pi, M. "Density modes in spherical 4He shells" (2004) Physical Review B - Condensed Matter and Materials Physics. 69(13):134502-1-134502-10
Consulte la política de Acceso Abierto del editor
Abstract:
We compute the density-fluctuation spectrum of spherical 4HeN shells adsorbed on the outer surface of C n fullerenes. The excitation spectrum is obtained within the random-phase approximation, with particle-hole elementary excitations and effective interaction extracted from a density-functional description of the shell structure. The presence of one or two solid helium layers adjacent to the adsorbing fullerene is phenomenologically accounted for. We illustrate our results for a selection of numbers of adsorbed atoms on C20, C 60, and C120. The hydrodynamical model that has proven successful to describe helium excitations in the bulk and in restricted geometries permits to perform a rather exhaustive analysis of various fluid spherical systems, namely, spheres, cavities, free bubbles, and bound shells of variable size.
Registro:
| Documento: | Artículo |
| Título: | Density modes in spherical 4He shells |
| Autor: | Barranco, M.; Hernández, E.S.; Mayol, R.; Pi, M. |
| Filiación: | Dept. Estructura/Constituents Mat., Facultad de Física, Universitat de Barcelona, E-08028 Barcelona, Spain Departamento de Física, Fac. de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina Consejo Nac. de Invest. Cie. y Tec., Argentina |
| Palabras clave: | carbon; fullerene; helium; article; chemical structure; density; density functional theory; elementary particle; excitation; geometry; hydrodynamics; mathematical analysis; quantum mechanics |
| Año: | 2004 |
| Volumen: | 69 |
| Número: | 13 |
| Página de inicio: | 134502 |
| Página de fin: | 1-134502-10 |
| DOI: | http://dx.doi.org/10.1103/PhysRevB.69.134502 |
| 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: | carbon, 7440-44-0; helium, 7440-59-7 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v69_n13_p134502_Barranco |
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Citas:
---------- APA ----------
Barranco, M., Hernández, E.S., Mayol, R. & Pi, M. (2004) . Density modes in spherical 4He shells. Physical Review B - Condensed Matter and Materials Physics, 69(13), 134502-1-134502-10.http://dx.doi.org/10.1103/PhysRevB.69.134502
---------- CHICAGO ----------
Barranco, M., Hernández, E.S., Mayol, R., Pi, M. "Density modes in spherical 4He shells" . Physical Review B - Condensed Matter and Materials Physics 69, no. 13 (2004) : 134502-1-134502-10.http://dx.doi.org/10.1103/PhysRevB.69.134502
---------- MLA ----------
Barranco, M., Hernández, E.S., Mayol, R., Pi, M. "Density modes in spherical 4He shells" . Physical Review B - Condensed Matter and Materials Physics, vol. 69, no. 13, 2004, pp. 134502-1-134502-10.http://dx.doi.org/10.1103/PhysRevB.69.134502
---------- VANCOUVER ----------
Barranco, M., Hernández, E.S., Mayol, R., Pi, M. Density modes in spherical 4He shells. Phys. Rev. B Condens. Matter Mater. Phys. 2004;69(13):134502-1-134502-10.http://dx.doi.org/10.1103/PhysRevB.69.134502
