Towards spectral pattern of spin polarized sodium clusters: The example of Na |
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| Authors: | C Kohl SM El-Gammal F Calvayrac E Suraud P-G Reinhard |
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| Institution: | Institut für Theoretische Physik, Universit?t Erlangen, Staudtstrasse 7, 91058 Erlangen, Germany, DE
Laboratoire de Physique Quantique, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex, France, DE
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| Abstract: | We investigate spin modes in the ground state and the polarized first isomer of the Na12 cluster describing the valence electrons in time-dependent local-spin-density approximation (TDLSDA) and the detailed ionic
background using local pseudopotentials. The spin modes show a collective redshift compared to the unperturbed particle-hole
excitations. They are strongly fragmented and the average energy of the modes along the principal axes are related to the
underlying geometry (triaxial or axially symmetric). For the polarized isomer, we find significant cross talk between the
spin modes and the dipole plasmon, which hints at a possible spectroscopic identification.
Received: 22 June 1998 / Accepted: 29 July 1998 |
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| Keywords: | PACS 36 20 Kd Electronic structure and spectra - 36 40 Gk Plasma and collective effects in clusters - 36 40 Vz Optical properties of clusters |
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