2-DIMENSIONAL EXCITON-STATES OF GAAS ALAS MULTIQUANTUM WELLS UNDER HIGH MAGNETIC-FIELDS/

Authors
YASUI T SEGAWA Y AOYAGI Y IIMURA Y BAUER GEW MOGI I KIDO G
Citation
T. Yasui et al., 2-DIMENSIONAL EXCITON-STATES OF GAAS ALAS MULTIQUANTUM WELLS UNDER HIGH MAGNETIC-FIELDS/, Physica. B, Condensed matter, 201, 1994, pp. 407-410
Citations number
12
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
201
Year of publication
1994
Pages
407 - 410
Database
ISI
SICI code
0921-4526(1994)201:<407:2EOGAM>2.0.ZU;2-0
Abstract
Hydrogen-like exciton states at high magnetic fields up to 25 T are st udied by magneto-optical spectroscopy of a multiquantum well sample wi th 265 angstrom-thick wells of GaAs and 260 angstrom-thick barriers of AlAs. These excitonic states are well explained by effective mass cal culations which take into account residual electric fields in the samp le and the valence band mixing in magnetic fields. A symmetry change o f the exciton ground state is observed at a magnetic field of approxim ately 15 T.