QUANTUM-WELLS WITH ZERO VALENCE-BAND OFFSET - DRASTIC ENHANCEMENT OF FORBIDDEN EXCITONIC TRANSITIONS

Authors
KAVOKIN AV KALITEEVSKI MA GOUPALOV SV BERGER JD LYNGNES O GIBBS HM KHITROVA G RIBAYROL A BELLABCHARA A LEFEBVRE P COQUILLAT D LASCARAY JP
Citation
Av. Kavokin et al., QUANTUM-WELLS WITH ZERO VALENCE-BAND OFFSET - DRASTIC ENHANCEMENT OF FORBIDDEN EXCITONIC TRANSITIONS, Physical review. B, Condensed matter, 54(16), 1996, pp. 11078-11081
Citations number
15
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
54
Issue
16
Year of publication
1996
Pages
11078 - 11081
Database
ISI
SICI code
0163-1829(1996)54:16<11078:QWZVO->2.0.ZU;2-L
Abstract
Forbidden e1hh3 and e1lh3 exciton transitions (where hh and Ih are hea vy-hale and light-hole, respectively) appear in magnetooptical spectra of quantum wells that undergo a type-I-type-II band-alignment transit ion, here for ordinary (In,Ga)As/GaAs multiple quantum wells and a sin gle CdTe quantum well with a (Cd,Mn)Te semimagnetic barrier exhibiting a giant Zeeman effect. The oscillator strength becomes so strong in a field of 11.25 T that vacuum-field Rabi splitting is clearly seen in reflection spectra when the e1lh3 exciton transition couples to the tw o-dimensional optical mode in a microcavity.