Size effects and plasmon absorption in three-dimensional and two-dimensional metallic systems

✍ Scribed by S Olszewski; T Kwiatkowski

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 914 KB
• Volume: 215
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(95)00406-y

✦ Synopsis

The dependence of the plasmon position and plasmon width on the radius of the metallic sphere is examined with the aid of the quantum-mechanical polarizability of a non-interacting free-electron system having a definite size and spherical shape. In a further step, the polarizability of the two-dimensional gas is applied for the calculation of the peak positions of the surface plasmons as a function of the size of the wave-vector component parallel to the metal surface. These data are rather widely compared with the experimental results. For a normal incidence of electrons on the gas plate the dependence of positions of the plasmon maxima on the thickness of the electron-gas layer is also examined.