Abstract
The properties of the optical-absorption spectrum of the Laughlin liquid state in the presence of a localized dynamic perturbation are investigated. We find that the absorption spectrum consists of magnetoroton satellites. The threshold of the absorption spectrum is finite and a power-law singularity is absent because of the incompressibility of the Laughlin state. A possibility for direct experimental observation of magnetorotons is discussed.
Original language | English |
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Pages (from-to) | 1836-1838 |
Number of pages | 3 |
Journal | Physical Review B |
Volume | 40 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1989 |
Externally published | Yes |
ASJC Scopus subject areas
- Condensed Matter Physics