Data di Pubblicazione:
2004
Citazione:
Alkali and alkali-earth ions in 4He systems / M. Rossi, M. Verona, D.E. Galli, L. Reatto. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 69:21(2004), pp. 212510.212510-1-212510.212510-4.
Abstract:
We study with variational Monte Carlo simulations a single ion impurity in nanodroplets and in liquid He-4. Within the shadow wave function (SWF) approach we have studied alkali-earth ion doped He-4 systems (Be+ and Mg+) and we have also improved our previous variational results for alkali ion impurities (Na+, K+, and Cs+). The new SWF allows for anisotropic correlations between He-4 atoms and the ion. The first shell of He-4 atoms around the ions has always a well defined solidlike structure, which is remarkably different for each ion but it does not depend on the He-4 system (bulk liquid or cluster). We also give results for the chemical potential, the single particle excitation spectrum, and the effective mass of the ions in the bulk.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
SHADOW WAVE-FUNCTIONS; LIQUID-HELIUM; GROUND-STATE; INTERACTION POTENTIALS; RARE-GAS; HE-4; ATOMS; SPECTROSCOPY
Elenco autori:
M. Rossi, M. Verona, D.E. Galli, L. Reatto
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