Springer LINK: The European Physical Journal B - Abstract Volume 4 Issue 1 (1998) pp 39-43

The European Physical Journal B

ISSN: 1434-6028 (printed version)
ISSN: 1434-6036 (electronic version)

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Abstract Volume 4 Issue 1 (1998) pp 39-43

Kinetics of dark excitons and excitonic trions in InGaAs single quantum well

V.B. Timofeev (1), A.V. Larionov (1), J. Zeman (2) (a), G. Martinez (2) (b), V.I. Falko (3), M. Bayer (4), A. Forchel (4)

(1) ISSP, Russian Academy of Sciences, 142432 Chernogolovka, Russia
(2) GHMFL, MPI-FKF/CNRS, 25 avenue des Martyrs, 38042, Grenoble, France
(3) School of Physics and Chemistry, Lancaster University, Lancaster, LA1 4YB, UK
(4) Würzburg University, Institute of Technical Physics, Am Hubland, 97074, Würzburg, Germany

Received: 29 October 1997 / Received in final form: 20 February 1998 / Accepted: 21 February 1998

Abstract: Magnetooptical studies performed on a wide InGaAs/GaAs single quantum well indicate that optically non-active (dark) excitons with total angular momentum $M= \pm 2$ play the role of a reservoir for the creation of free multiparticle excitonic complexes. After analyzing the magnetic field evolution of the circularly polarized components of the low energy structure appearing in the main excitonic luminescence line we assign this feature to the excitonic trion formation. The binding energy of the excitonic trions was estimated to be of the order of 1 meV.

PACS. 78.66.-w Optical properties of specific thin films, surfaces, and low-dimensional structures: superlattices, quantum well structures, multilayers, and microparticles - 78.66.Fd III-V semiconductors - 71.35.-y Excitons and related phenomena

(a) On leave from the Institute of Physics, Academy of Sciences, Prague, Czech Republic.
(b) email: gmartin@polycnrs-gre.fr

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