Photoelectron spectroscopy of small chromium clusters: Observation of even-odd alternations and theoretical interpretation

Journal Article · Thu May 01 00:00:00 EDT 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.12884· OSTI ID:544352

Wang, L ^[1]; Wu, H ^[1]; Cheng, H ^[2]

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1. Department of Physics, Washington State University, Richland, Washington 99352 (United States)
2. Air Products and Chemicals, Inc., 7201 Hamilton Boulevard, Allentown, Pennsylvania 18195 (United States)

We report an extensive photoelectron-spectroscopy study of size-selected Cr{sub n}{sup {minus}} (n=2{endash}70) clusters. Even-odd alternations are observed for the small Cr{sub n} clusters and their electron affinities. The spectra of clusters with an even number of atoms show less density of states near the threshold, while those with odd clusters show more complex features. A dimer growth path found in a previous theoretical study is used to interpret the data and accounts well for the even-odd effects. The work provides a key contribution to the understanding of the complicated electronic structure of the Cr clusters. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 544352
• Journal Information: Physical Review, B: Condensed Matter, Vol. 55, Issue 19; Other Information: PBD: May 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ATOMIC CLUSTERS
ELECTRONIC STRUCTURE
CHROMIUM
PHOTOELECTRON SPECTROSCOPY
DIMERS
AFFINITY
BONDING