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Vibrations of closed-shell Lennard-Jones icosahedral and cuboctahedral clusters and their effect on the cluster ground-state energy (CROSBI ID 107410)

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Šiber, Antonio Vibrations of closed-shell Lennard-Jones icosahedral and cuboctahedral clusters and their effect on the cluster ground-state energy // Physical review. B, Condensed matter and materials physics, 70 (2004), 075407-1 - 07540-x

Podaci o odgovornosti

Šiber, Antonio

engleski

Vibrations of closed-shell Lennard-Jones icosahedral and cuboctahedral clusters and their effect on the cluster ground-state energy

Vibrational spectra of closed shell Lennard-Jones icosahedral and cuboctahedral clusters are calculated for shell numbers between 2 and 9. Evolution of the vibrational density of states with the cluster shell number is examined and differences between icosahedral and cuboctahedral clusters described. This enabled a quantum calculation of ground state energies of the clusters in the quasiharmonic approximation and a comparison of the differences between the two types of clusters. It is demonstrated that in the quantum treatment, the closed shell icosahedral clusters binding energies differ from those of cuboctahedral clusters more than is the case in classical treatment.

clusters; free energy; quantum vibrations; stability

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Podaci o izdanju

70

2004.

075407-1 - 07540-x

objavljeno

1098-0121

Povezanost rada

Fizika

Indeksiranost