Scanning tunneling microscopy and spectroscopy of palladium clusters supported on graphite
- 15 April 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 51 (16), 11043-11048
- https://doi.org/10.1103/physrevb.51.11043
Abstract
The surface of palladium clusters supported on graphite has been investigated with a scanning tunneling microscope in ultrahigh vacuum. Electron tunneling spectra were measured for clusters of different sizes. The surface density of electronic states at the Fermi energy presents a strong size dependence for small clusters and becomes size independent for clusters larger than a critical volume. This phenomenon has been interpreted in terms of the size-dependent electronic structure of the particles.Keywords
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