Probing the 2D to 3D structural transition in gold cluster anions using argon tagging
Different physisorption properties by 2D and 3D isomers of Au_{n};{-} clusters are observed and used to probe the 2D to 3D structural transition. Strong Ar clustering occurs on planar Au_{n};{-} and the planar faces of the pyramidal Au20-. An abrupt change of Ar clustering at Au12- confirms the 2D t...
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| Published in | Physical review letters Vol. 102; no. 15; p. 153401 |
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| Main Authors | , |
| Format | Journal Article |
| Language | English |
| Published |
United States
17.04.2009
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| Online Access | Get more information |
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| Summary: | Different physisorption properties by 2D and 3D isomers of Au_{n};{-} clusters are observed and used to probe the 2D to 3D structural transition. Strong Ar clustering occurs on planar Au_{n};{-} and the planar faces of the pyramidal Au20-. An abrupt change of Ar clustering at Au12- confirms the 2D to 3D structural transition at this size, where both isomers coexist. The minor 2D isomer can be titrated out by Ar to produce a clean 3D-Au12- beam and beams of Au_{12}Ar_{m};{-} with enhanced 2D isomers. Using the Ar titration and tagging, isomer-specific photoelectron spectra for the 2D and 3D Au12- are obtained. |
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| ISSN: | 0031-9007 |
| DOI: | 10.1103/physrevlett.102.153401 |