Le Journal de Physique IV 03 (1993) C5-167-C5-170
Condensation of indirect excitons in coupled AlAs/GaAs quantum wellsL.V. BUTOV, A. ZRENNER, G. BÖHM and G. WEIMANN
Walter Schottky Institut, Am Coulombwall, 85748 Garching, Germany
The photoluminescence (PL) of excitons confined in an electric field tunable coupled AlAs/GaAs quantum well has been investigated at T[MATH]350 mK and magnetic field H[MATH]14 T. In the indirect regime when electrons and holes are separated both in real- and in k-space, magnetic field was found to result in (i) a strong change of both the PL intensity and decay time which is attributed to the anomalies in the exciton transport and (ii) an appearance of a huge broad band noise in the PL intensity which is an evidence of exciton condensation.
© EDP Sciences 1993