Conference item

Enhanced excitonic interactions in doped quantum wells in high magnetic fields

Abstract:: We report a strong enhancement and transformation of the Fermi edge singularity at high magnetic fields in a series of doped GaAs-Al33%Ga67%As quantum wells with width varying from 68 Angstrom to 150 Angstrom with carrier densities similar to4 (.) 10(11)cm(-2). We explain this behavior in terms of a resonance process due to collective excitations of the 2D system created by interband absorption. Such a collective excitation or "Mahan" trion occurs whenever a pair of electrons with a total momentum equal to zero becomes bound by the Coulomb attraction to a valence band hole.

Publication status:: Published

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APA Style

Zhitomirsky, V., Chughtai, R., Nicholas, R., & Henini, M. (2001). Enhanced excitonic interactions in doped quantum wells in high magnetic fields. 87, 989–990.

MLA Style

Zhitomirsky, V., et al. Enhanced Excitonic Interactions in Doped Quantum Wells in High Magnetic Fields. 2001, pp. 989–90.

Chicago Style

Zhitomirsky, V, R Chughtai, R Nicholas, and M Henini. 2001. “Enhanced Excitonic Interactions in Doped Quantum Wells in High Magnetic Fields.” In , 87:989–90.
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Authors

+ Zhitomirsky, V More by this author

Role:: Author

+ Chughtai, R More by this author

Role:: Author

+ Nicholas, R More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Condensed Matter Physics
Role:: Author

+ Henini, M More by this author

Role:: Author

Journal:: PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II More from this journal
Volume:: 87
Pages:: 989-990
Publication date:: 2001-01-01
Event title:: 25th International Conference on the Physics of Semiconductors (ICPS25)
ISSN:: 0930-8989
ISBN:: 3540417788

Keywords:: EVOLUTION

ABSORPTION

SPECTRA

2-DIMENSIONAL ELECTRON-GAS
Pubs id:: pubs:24054
UUID:: uuid:673f78cc-8a00-47e0-a17a-517a39684a81
Local pid:: pubs:24054
Source identifiers:: 24054
Deposit date:: 2012-12-19

Terms of use

Copyright date:: 2001

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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