|
|||||
|
|
Bulk and surface collective modes in metal superlattices |
|
| Affiliation: | 1. Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, 21502 Geesthacht, Germany;2. School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China;3. CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Trivandrum 695019, India;1. Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland;2. School of Materials Science and Engineering, UNSW, Sydney, NSW 2052, Australia |
| Abstract: | We study bulk and surface collective modes in a metal superlattice using a formalism bringing out the classical nature of the excitations. Appropriate limits are investigated and earlier erroneous mode assignements for semiconductor superlattices are corrected. Explicit calculations are performed for a structure having metals of very different electron densities. Our study indicates that measuring the collective mode frequencies in superlattices can yield important geometrical information. |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ | |