Abstract
Calculating the dynamical dielectric response function for a two-dimensional electron gas (2D EG) under a perpendicular magnetic field and subjected to an additional weak unidirectional periodic magnetic field within the random-phase approximation (RPA), we find that not only is the response function broadened in the presence of the magnetic modulation, but it is also found to contain a series of subsingularities at the band edges which are attributed to the magnetic modulation induced broadening of the energy spectrum. © 1998 Academic Press.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 285-289 |
| Number of pages | 5 |
| Journal | Superlattices and Microstructures |
| Volume | 24 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 1 1998 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Materials Science
- Electrical and Electronic Engineering
- Condensed Matter Physics