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 |
|---|---|
| Pages (from-to) | 1648-1651 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 46 |
| Issue number | 25 |
| DOIs | |
| State | Published - 1981 |