Highest electron affinity as a predictor of cluster anion structures

Kronik, Leeor; Fromherz, Roland; Ko, Eunjung; Ganteför, Gerd; Chelikowsky, James R.

Highest electron affinity as a predictor of cluster anion structures

Files

NatMat120021.pdf(756.67 KB)

Date

2002

Authors

Kronik, Leeor

Fromherz, Roland

Ko, Eunjung

Ganteför, Gerd

Chelikowsky, James R.

Publication type

Journal article

Published in

Nature Materials ; 1 (2002), 1. - pp. 49-53

Abstract

Small clusters have a range of unique physical and chemical phenomena that are strongly size dependent. However, analysis of these phenomena often assumes that thermodynamic equilibrium conditions prevail. We compare experimentally measured and ab initio computed photoelectron spectra of bare and deuterated silicon cluster anions produced in a plasma environment. We find that the isomers detected experimentally are usually not the ground-state isomers, but metastable ones, which indicates that cluster relaxation is strongly limited kinetically by a dwell time that is much shorter than the relaxation time. We show that, under these conditions, the highest electron affinity replaces the traditional lowest total energy as the appropriate criterion for predicting isomer structures. These findings demonstrate that a stringent examination of non-equilibrium effects can be crucial for a correct analysis of cluster properties.

Subject (DDC)

530 Physics

Cite This

ISO 690

KRONIK, Leeor, Roland FROMHERZ, Eunjung KO, Gerd GANTEFÖR, James R. CHELIKOWSKY, 2002. Highest electron affinity as a predictor of cluster anion structures. In: Nature Materials. 1(1), pp. 49-53. Available under: doi: 10.1038/nmat704

BibTex

@article{Kronik2002Highe-4996,
  year={2002},
  doi={10.1038/nmat704},
  title={Highest electron affinity as a predictor of cluster anion structures},
  number={1},
  volume={1},
  journal={Nature Materials},
  pages={49--53},
  author={Kronik, Leeor and Fromherz, Roland and Ko, Eunjung and Ganteför, Gerd and Chelikowsky, James R.}
}

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