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Author |
Leal, A.; Mateo, D.; Pi, M.; Barranco, M.; Navarro, J. |
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Title |
The structure of mixed He-3-He-4 droplets doped with OCS: A density functional approach |
Type |
Journal Article |
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Year |
2013 |
Publication |
Journal of Chemical Physics |
Abbreviated Journal |
J. Chem. Phys. |
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Volume |
139 |
Issue |
17 |
Pages |
174308 - 6pp |
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Abstract |
We have investigated the structure and energetics of mixed He-3-He-4 droplets doped with a carbonyl sulfide molecule within a density functional approach considering a small but finite temperature of 0.1 K. The molecule is treated as an external field to which the helium droplet is attached. The energetics and appearance of these droplets are discussed for selected numbers of helium atoms, identifying the first magic numbers of the fermionic component. |
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Address |
[Leal, Antonio; Mateo, David; Pi, Marti; Barranco, Manuel] Univ Barcelona, Fac Fis, Dept ECM, E-08028 Barcelona, Spain |
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Publisher |
Amer Inst Physics |
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Language |
English |
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Edition ![sorted by Edition field, descending order (down)](img/sort_desc.gif) |
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ISSN |
0021-9606 |
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Notes |
WOS:000326922300022 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ pastor @ |
Serial |
1658 |
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Author |
Ancilotto, F.; Barranco, M.; Navarro, J.; Pi, M. |
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Title |
A Density Functional Approach to Para-hydrogen at Zero Temperature |
Type |
Journal Article |
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Year |
2016 |
Publication |
Journal of Low Temperature Physics |
Abbreviated Journal |
J. Low Temp. Phys. |
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Volume |
185 |
Issue |
1-2 |
Pages |
26-38 |
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Keywords |
Solid and liquid bulk para-hydrogen; Small para-hydrogen clusters; Density functional theory |
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Abstract |
We have developed a density functional (DF) built so as to reproduce either the metastable liquid or the solid equation of state of bulk para-hydrogen, as derived from quantum Monte Carlo zero temperature calculations. As an application, we have used it to study the structure and energetics of small para-hydrogen clusters made of up to molecules. We compare our results for liquid clusters with diffusion Monte Carlo (DMC) calculations and find a fair agreement between them. In particular, the transition found within DMC between hollow-core structures for small N values and center-filled structures at higher N values is reproduced. The present DF approach yields results for (pH) clusters indicating that for small N values a liquid-like character of the clusters prevails, while solid-like clusters are instead energetically favored for . |
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Address |
[Ancilotto, Francesco] Dipartimento Fis & Astron Galileo Galilei, Padua, Italy, Email: manuel@ecm.ub.edu |
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Publisher |
Springer/Plenum Publishers |
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Language |
English |
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Original Title |
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Edition ![sorted by Edition field, descending order (down)](img/sort_desc.gif) |
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ISSN |
0022-2291 |
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Conference |
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Notes |
WOS:000382142000003 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2814 |
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Permanent link to this record |