DETECTION OF 2-DIMENSIONAL ELECTRON GASES IN UNDOPED HETEROJUNCTIONS WITH MAGNETOPHOTOLUMINESCENCE

Authors
DRIESSEN FAJM OLSTHOORN SM GILING LJ
Citation
Fajm. Driessen et al., DETECTION OF 2-DIMENSIONAL ELECTRON GASES IN UNDOPED HETEROJUNCTIONS WITH MAGNETOPHOTOLUMINESCENCE, Applied physics letters, 62(20), 1993, pp. 2528-2529
Citations number
21
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
62
Issue
20
Year of publication
1993
Pages
2528 - 2529
Database
ISI
SICI code
0003-6951(1993)62:20<2528:DO2EGI>2.0.ZU;2-F
Abstract
We report the observation of a magnetoexciton in undoped GaAs/AlxGa1-x As heterojunctions by photoluminescence. The exciton originates from p hotoexcited holes and two-dimensional electrons, which are confined in the shallow potential at the heterointerface. The observation of this exciton is particularly useful for identification of unintended two-d imensional electron gases in caws where detection by temperature-depen dent Hall measurements is difficult.