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Titolo:
Excitons, or no excitons, that is the question
Autore:
Oestreich, M; Hagele, D; Hubner, J; Ruhle, WW;
Indirizzi:
Univ Marburg, Fachbereich Phys, D-35032 Marburg, Germany Univ Marburg Marburg Germany D-35032 eich Phys, D-35032 Marburg, Germany Univ Marburg, Wissensch Zentrum Mat Wissensch, D-35032 Marburg, Germany Univ Marburg Marburg Germany D-35032 Wissensch, D-35032 Marburg, Germany
Titolo Testata:
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
fascicolo: 1, volume: 178, anno: 2000,
pagine: 27 - 32
SICI:
0031-8965(200003)178:1<27:EONETI>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
GAAS QUANTUM-WELLS; SPIN DYNAMICS; RELAXATION; BEATS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Oestreich, M Univ Marburg, Fachbereich Phys, Renthof 5, D-35032 Marburg, Germany Univ Marburg Renthof 5 Marburg Germany D-35032 burg, Germany
Citazione:
M. Oestreich et al., "Excitons, or no excitons, that is the question", PHYS ST S-A, 178(1), 2000, pp. 27-32

Abstract

We study the population of excitons in GaAs/AlGaAs quantum wells in the time span between optical excitation and optical recombination. We distinguish between Is excitons and free electrons and holes by tracing the electron-hole exchange energy and thereby the overlap of electron and hole. The experiments prove that at many experimental conditions rather electrons and holes than Is excitons are present during this time span although recombination takes place at the Is exciton energy of free or localized excitons. The Is exciton states are only populated under stringent experimental conditions.

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Documento generato il 29/11/20 alle ore 06:51:14