Pump-probe spectrum in a correlated electron-hole system
| Autor: | Takeshi J. Inagaki, Masaki Aihara |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Condensed Matter::Quantum Gases
Condensed matter physics Condensed Matter::Other Chemistry Exciton Biophysics General Chemistry Electron hole Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Biochemistry Atomic and Molecular Physics and Optics Pairing Excited state Atomic physics Random phase approximation Quantum fluctuation Excitation Biexciton |
| Zdroj: | Journal of Luminescence. :79-82 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/s0022-2313(97)00179-8 |
| Popis: | The pump-probe spectra in highly excited semiconductors are calculated to clarify the quantum fluctuation effect in a dense electron-hole system. In practical electron-hole densities, center-of-mass motion of excitons as well as state-filling effect play a significant role. The analysis is based on the BCS-like pairing theory and generalized random-phase approximation is used to take the collective excitation associated with the exciton center-of-mass motion into account. It is shown that the crossover from the electron-hole BCS state to the exciton condensed state clearly manifests itself in the pump-probe spectra. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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