Abstract
Low-energy-electron-loss spectroscopy is used to study collective surface excitations on accumulation layers on ZnO. A prominent loss peak is observed which shifts in energy with electron concentration. The results are well accounted for theoretically and provide direct evidence for the existence of two-dimensional plasmons.
Original language | English |
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Pages (from-to) | 1648-1651 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 46 |
Issue number | 25 |
DOIs | |
State | Published - 1981 |