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Title: Evolution of the Electronic Properties of Sn-n Clusters (n=4-45) and the Semiconductor-to-Metal Transition

Abstract

The electronic structure of Snn - clusters _n=4–45_ was examined using photoelectron spectroscopy at photon energies of 6.424 eV _193 nm_ and 4.661 eV _266 nm_ to probe the semiconductor-to-metal transition. Well resolved photoelectron spectra were obtained for small Snn -clusters _n_25_, whereas more congested spectra were observed with increasing cluster size. A distinct energy gap was observed in the photoelectron spectra of Snn - clusters with n_41, suggesting the semiconductor nature of small neutral tin clusters. For Snn - clusters with n_42, the photoelectron spectra became continuous and no well-defined energy gap was observed, indicating the onset of metallic behavior for the large Snn clusters. The photoelectron spectra thus revealed a distinct semiconductor-to-metal transition for Snn clusters at n=42.

Authors:
; ;
Publication Date:
Research Org.:
Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
Sponsoring Org.:
USDOE
OSTI Identifier:
909230
Report Number(s):
PNNL-SA-54883
Journal ID: ISSN 0021-9606; JCPSA6; 25099a; KP1704020; TRN: US0703845
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 126; Journal Issue: 6
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRONIC STRUCTURE; ENERGY GAP; PHOTOELECTRON SPECTROSCOPY; PHOTONS; PROBES; SPECTRA; Environmental Molecular Sciences Laboratory

Citation Formats

Cui, Lifeng, Wang, Leiming, and Wang, Lai S. Evolution of the Electronic Properties of Sn-n Clusters (n=4-45) and the Semiconductor-to-Metal Transition. United States: N. p., 2007. Web. doi:10.1063/1.2435347.
Cui, Lifeng, Wang, Leiming, & Wang, Lai S. Evolution of the Electronic Properties of Sn-n Clusters (n=4-45) and the Semiconductor-to-Metal Transition. United States. doi:10.1063/1.2435347.
Cui, Lifeng, Wang, Leiming, and Wang, Lai S. Wed . "Evolution of the Electronic Properties of Sn-n Clusters (n=4-45) and the Semiconductor-to-Metal Transition". United States. doi:10.1063/1.2435347.
@article{osti_909230,
title = {Evolution of the Electronic Properties of Sn-n Clusters (n=4-45) and the Semiconductor-to-Metal Transition},
author = {Cui, Lifeng and Wang, Leiming and Wang, Lai S},
abstractNote = {The electronic structure of Snn - clusters _n=4–45_ was examined using photoelectron spectroscopy at photon energies of 6.424 eV _193 nm_ and 4.661 eV _266 nm_ to probe the semiconductor-to-metal transition. Well resolved photoelectron spectra were obtained for small Snn -clusters _n_25_, whereas more congested spectra were observed with increasing cluster size. A distinct energy gap was observed in the photoelectron spectra of Snn - clusters with n_41, suggesting the semiconductor nature of small neutral tin clusters. For Snn - clusters with n_42, the photoelectron spectra became continuous and no well-defined energy gap was observed, indicating the onset of metallic behavior for the large Snn clusters. The photoelectron spectra thus revealed a distinct semiconductor-to-metal transition for Snn clusters at n=42.},
doi = {10.1063/1.2435347},
journal = {Journal of Chemical Physics},
number = 6,
volume = 126,
place = {United States},
year = {Wed Feb 14 00:00:00 EST 2007},
month = {Wed Feb 14 00:00:00 EST 2007}
}