Title
Infrared-spectroscopy of subbands, minibands, and donors in GaAs/AlGaAs superlattices Infrared-spectroscopy of subbands, minibands, and donors in GaAs/AlGaAs superlattices
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Amsterdam ,
Subject
Physics
Chemistry
Source (journal)
Surface science: a journal devoted to the physics and chemistry of interfaces. - Amsterdam
Source (book)
9TH INTERNATIONAL CONF ON THE ELECTRONIC PROPERTIES OF TWO-DIMENSIONAL, SYSTEMS ( EP2DS-9 ) / 5TH INTERNATIONAL CONF ON MODULATED SEMICONDUCTOR, STRUCTURES ( MSS-5 ), JUL 08-12, 1991, NARA, JAPAN
Volume/pages
263(1992) :1-3 , p. 518-526
ISSN
0039-6028
ISI
A1992HF18600104
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A far-infrared absorption study of electrons in lightly-doped GaAs/Al0.3Ga0.7As superlattices is presented. Both weakly and strongly coupled superlattices are investigated, and the difference between intersubband transitions and transitions between extended minibands is demonstrated. At low temperatures, the absorption spectra are dominated by donor transitions. The 1s-2p(z) transition, which is intimately related to the intersubband transition, is observed. All experimental data are compared to an envelope function calculation for the miniband structure and a variational calculation for the donor energies. Excellent agreement between experiment and theory is achieved.
E-info
https://repository.uantwerpen.be/docman/iruaauth/006341/1284916.pdf
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