Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 22, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4808214
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Funding
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886]
- KAKENHI [22560006]
- Funding Program for Next-Generation World-Leading Researchers [GR046]
- Grants-in-Aid for Scientific Research [24810011, 22560006] Funding Source: KAKEN
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The evolution of the electronic structure and the structural stability of epitaxial silicene on ZrB2(0001) thin films exposed to K atoms has been studied by angle-resolved photoelectron spectroscopy and low-energy electron diffraction. Potassium adsorption leads to charge donation to the silicene lattice, which is accompanied by the partial filling of a formerly unoccupied pi* band and by the increasing hybridization between the diboride surface state and the lower branch of the back-folded pi band. The results allow an identification of silicene-derived pi electronic states and confirm that before K adsorption, the interactions at the silicene-substrate interface are rather weak. (C) 2013 AIP Publishing LLC.
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