Electronic entropy, shell structure, and size-evolutionary patterns of metal clusters

Details Electronic entropy, shell structure, and size-evolutionary patterns of metal clusters Electronic entropy, shell structure, and size-evolutionary patterns of metal clusters

1999-06-02

arxiv.org/abs/physics/9906005v1

Phys. Rev. Lett. 78, 1424 (24 February 1997)

Physics

Atomic and Molecular Clusters

Latex/Revtex, 4 pages with 3 Postscript figures

Scientific paper

10.1103/PhysRevLett.78.1424

We show that electronic-entropy effects in the size-evolutionary patterns of relatively small (as small as 20 atoms), simple-metal clusters become prominent already at moderate temperatures. Detailed agreement between our finite-temperature-shell-correction-method calculations and experimental results is obtained for certain temperatures. This agreement includes a size-dependent smearing out of fine-structure features, accompanied by a measurable reduction of the heights of the steps marking major-shell and subshell closings, thus allowing for a quantitative analysis of cluster temperatures.

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