Datum
1991Metadata
Zur Langanzeige
Aufsatz
Theory for the optical properties of small Hg_n clusters
Zusammenfassung
The static and dynamical polarizabilities of the Hg-dimer are calculated by using a Hubbard Hamiltonian to describe the electronic structure. The Hamiltonian is diagonalized exactly within a subspace of second-quantized electronic states from which only multiply ionized atomic configurations have been excluded. With this approximation we can describe the most important electronic transitions including the effect of charge fluctuations. We analyze the polarizability as a function of the intraatomic Coulomb interaction which represents the repulsion between electrons. We obtain that this interaction results in strong electronic correlations in the excited states and increases the first excitation energy of the dimer by 0.8 eV in comparison to a calculation which neglects correlations, resulting in a better agreement with the experiment.
Zitierform
Z. Phys. D 19, 215 - 217 (1991)Sammlung(en)
Publikationen (Theoretische Physik II - Theoretische Festkörper- und Ultrakurzzeitphysik)Zitieren
@article{urn:nbn:de:hebis:34-2008070222424,
author={Baladrón, C. and Garcia, Martin E. and Stampfli, P. and Bennemann, K. H.},
title={Theory for the optical properties of small Hg_n clusters},
year={1991}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 1991$n1991 1500 1/eng 2050 ##0##urn:nbn:de:hebis:34-2008070222424 3000 Baladrón, C. 3010 Garcia, Martin E. 3010 Stampfli, P. 3010 Bennemann, K. H. 4000 Theory for the optical properties of small Hg_n clusters / Baladrón, C. 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/urn:nbn:de:hebis:34-2008070222424=x R 4204 \$dAufsatz 4170 7136 ##0##urn:nbn:de:hebis:34-2008070222424
2008-07-02T09:13:42Z 2008-07-02T09:13:42Z 1991 0722-3277 0178-7683 urn:nbn:de:hebis:34-2008070222424 http://hdl.handle.net/123456789/2008070222424 559077 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 Theory for the optical properties of small Hg_n clusters Aufsatz The static and dynamical polarizabilities of the Hg-dimer are calculated by using a Hubbard Hamiltonian to describe the electronic structure. The Hamiltonian is diagonalized exactly within a subspace of second-quantized electronic states from which only multiply ionized atomic configurations have been excluded. With this approximation we can describe the most important electronic transitions including the effect of charge fluctuations. We analyze the polarizability as a function of the intraatomic Coulomb interaction which represents the repulsion between electrons. We obtain that this interaction results in strong electronic correlations in the excited states and increases the first excitation energy of the dimer by 0.8 eV in comparison to a calculation which neglects correlations, resulting in a better agreement with the experiment. open access Z. Phys. D 19, 215 - 217 (1991) Baladrón, C. Garcia, Martin E. Stampfli, P. Bennemann, K. H. Extern 33.10.-a 31.50.+w
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