Le Journal de Physique IV 03 (1993) C5-409-C5-412
Magnetoreflectivity study of type I - type II transition in CdTe/(Cd, Mn)Te quantum wellsA. RIBAYROL1, D. COQUILLAT1, A.V. KAVOKIN2, J.P. LASCARAY1, H.P. ZHOU3, C.M. SOTOMAYOR TORRES3, B. LUNN4 and D.E. ASHENFORD4
1 Groupe d'Etudes des Semiconducteurs, URA 357 du CNRS, Université Montpellier II, place E. Bataillon, 34095 Montpellier cedex 5, France
2 A.F. Ioffe Physico-Technical Institute, 26 Polyteknicheskaya Street, St. Petersburg 1942021, Russia
3 Nanoelectronics Research Centre, Department of Electronics & Electrical Engineering, Rankine Building, University of Glasgow, Glasgow G12 8QQ, U.K.
4 Department of Engineering Design and Manufacture, University of Hull, Cottingham Rd., Hull HU6 7RX, U.K.
The magnetic field induced type I - type II transition in a 20-Å-thick CdTe/Cd0.875Mn0.125Te single quantum well has been documented by the resonance light reflection measurements. The pronounced splitting of the lower Zeeman-component exciton resonance has been observed to appear at 1.5T and to increase at higher fields, which manifests the formation of direct and indirect exciton states in the type II quantum well.
© EDP Sciences 1993