Core-Hole Screening as a Probe for a Metal-to-Nonmetal Transition in Lead Clusters

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PhysRevLett102.pdf
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2009
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Senz, Volkmar
Oelßner, Patrice
Tiggesbäumker, Josef
Stanzel, Jörg
Bostedt, Christoph
Thomas, Heiko
Schöffler, Markus
Foucar, Lutz
Martins, Michael
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Physical Review Letters. 2009, 102, 138303. Available under: doi: 10.1103/PhysRevLett.102.138303
Zusammenfassung

Metal clusters serve as model systems to study basic problems of electronic correlation. Vacuum ultraviolet light from the free-electron laser FLASH ionizes 5d electrons from mass-separated negatively charged clusters, thus transiently leading to core-ionized neutral systems. Shielding of the core hole affects the electron binding energy. From the strong deviation from expectations of the metallic droplet and jellium models we conclude on reduced electronic shielding once the cluster size falls below about 20 atoms. This suggests a metal-to-nonmetal transition, in agreement with previous local density approximation calculations.

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ISO 690SENZ, Volkmar, Tim FISCHER, Patrice OELSSNER, Josef TIGGESBÄUMKER, Jörg STANZEL, Christoph BOSTEDT, Heiko THOMAS, Markus SCHÖFFLER, Lutz FOUCAR, Michael MARTINS, John J. NEVILLE, Matthias NEEB, Thomas MÖLLER, Wilfried WURTH, Eckart RÜHL, Reinhard DÖRNER, Horst SCHMIDT-BÖCKING, Wolfgang EBERHARDT, Gerd GANTEFÖR, Rolf TREUSCH, Paul RADCLIFFE, Karl-Heinz MEIWES-BROER, 2009. Core-Hole Screening as a Probe for a Metal-to-Nonmetal Transition in Lead Clusters. In: Physical Review Letters. 2009, 102, 138303. Available under: doi: 10.1103/PhysRevLett.102.138303
BibTex
@article{Senz2009CoreH-9113,
  year={2009},
  doi={10.1103/PhysRevLett.102.138303},
  title={Core-Hole Screening as a Probe for a Metal-to-Nonmetal Transition in Lead Clusters},
  volume={102},
  journal={Physical Review Letters},
  author={Senz, Volkmar and Fischer, Tim and Oelßner, Patrice and Tiggesbäumker, Josef and Stanzel, Jörg and Bostedt, Christoph and Thomas, Heiko and Schöffler, Markus and Foucar, Lutz and Martins, Michael and Neville, John J. and Neeb, Matthias and Möller, Thomas and Wurth, Wilfried and Rühl, Eckart and Dörner, Reinhard and Schmidt-Böcking, Horst and Eberhardt, Wolfgang and Ganteför, Gerd and Treusch, Rolf and Radcliffe, Paul and Meiwes-Broer, Karl-Heinz},
  note={Article Number: 138303}
}
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