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Title
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Infrared-spectroscopy of subbands, minibands, and donors in GaAs/AlGaAs superlattices
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Author
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Surface science : a journal devoted to the physics and chemistry of interfaces. - Amsterdam, 1964, currens
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Source (book)
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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
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Publication
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Amsterdam
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1992
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ISSN
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0039-6028
[print]
1879-2758
[online]
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DOI
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10.1016/0039-6028(92)90400-Z
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Volume/pages
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263
:1-3
(1992)
, p. 518-526
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ISI
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A1992HF18600104
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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