Electronic and structural evolution of Con clusters (n=1108) by photoelectron spectroscopy

Shu-Rong Liu, Hua-Jin Zhai, and Lai-Sheng Wang
Phys. Rev. B 64, 153402 – Published 14 September 2001
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Abstract

Well-resolved photoelectron spectra are reported for Con(n=1108) clusters. The data provide evidence for structural transitions and reveal in detail the molecular to bulk electronic evolution in Co clusters. Clusters with n<20 behave molecularlike with discrete transitions and dramatic size variations. Clusters with n>~20 behave bulklike with broad spectral features and smooth-size evolution. But discrete and well-resolved spectral features are observed around n=55, evident of a highly symmetric Co55 cluster. The molecularlike to bulklike transition is also shown in the electron affinities as a function of size, which obey the metallic-droplet model above Co20 and extrapolate to the bulk workfunction.

  • Received 15 June 2001

DOI:https://doi.org/10.1103/PhysRevB.64.153402

©2001 American Physical Society

Authors & Affiliations

Shu-Rong Liu, Hua-Jin Zhai, and Lai-Sheng Wang*

  • Department of Physics, Washington State University, 2710 University Drive, Richland, Washington 99352
  • W. R. Wiley Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, MS K8-88, P.O. Box 999, Richland, Washington 99352

  • *Author for correspondence. Email address: ls.wang@pnl.gov

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Issue

Vol. 64, Iss. 15 — 15 October 2001

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