QUANTUM CONFINEMENT OF EMBEDDED COPPER CLUSTER SANDWICHED BY LITHIUM FLUORIDE

G.H. Wang, H.Q. Zhang, J.X. Ma, M. Han, Q. Wang and J.J. Zhao
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G.H. Wang: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
H.Q. Zhang: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
J.X. Ma: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
M. Han: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
Q. Wang: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;
J.J. Zhao: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 1143-1146

Abstract: Optical absorption and laser Raman scattering spectroscopies as well as EXAFS are used to investigate the copper clusters embedded in the lithium fluoride, and the results indicate that (i) the metal clusters of about 2 nm in diameter have the bulk-like fcc structure with a contracted interatomic distance and lower mean coordination number, (ii) the embedded metal clusters show a surface-plasmon resonance, (iii) for clusters smaller than certain size the surface-phonon mode becomes important, and the high-order longitudinal phonon vibrational modes emerge.

Date: 1996
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DOI: 10.1142/S0218625X96002047

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