Abstract
The existence of image states in small clusters is shown, using a quantum-mechanical many-body approach. We present image state energies and wave functions for spherical jellium clusters up to 186 atoms, calculated in the GW approximation, where G is the Green's function and W is the dynamically screened Coulomb interaction, which by construction contains the dynamic long-range correlation effects that give rise to image effects. In addition, we find that image states are also subject to quantum confinement. To extrapolate our investigations to clusters in the mesoscopic size range, we propose a semiclassical model potential, which we test against our full GW results.
| Original language | English |
|---|---|
| Article number | 063201 |
| Pages (from-to) | - |
| Number of pages | 5 |
| Journal | Physical Review A |
| Volume | 70 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Dec 2004 |
Bibliographical note
© 2004 American Physical Society. This is an author produced version of a paper published in Physical Review A. Uploaded in accordance with the publisher's self archiving policy.Keywords
- QUASI-PARTICLE ENERGIES
- SPACE-TIME METHOD
- EXCESS ELECTRONS
- POTENTIAL STATES
- SODIUM CLUSTERS
- WATER CLUSTERS
- SURFACE-STATES
- WAVE-FUNCTIONS
- SELF-ENERGY
- SPECTROSCOPY