Magnetotransport in quantum cascade detectors: analyzing the current under illumination
Photocurrent measurements have been performed on a quantum cascade detector structure under strong magnetic field applied parallel to the growth axis. The photocurrent shows oscillations as a function of B . In order to describe that behavior, we have developed a rate equation model. The interpretat...
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Published in | Nanoscale research letters Vol. 6; no. 1; p. 206 |
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Main Authors | , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York
Springer New York
09.03.2011
BioMed Central Ltd SpringerOpen Springer |
Subjects | |
Online Access | Get full text |
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Summary: | Photocurrent measurements have been performed on a quantum cascade detector structure under strong magnetic field applied parallel to the growth axis. The photocurrent shows oscillations as a function of
B
. In order to describe that behavior, we have developed a rate equation model. The interpretation of the experimental data supports the idea that an elastic scattering contribution plays a central role in the behavior of those structures. We present a calculation of electron lifetime versus magnetic field which suggests that impurities scattering in the active region is the limiting factor. These experiments lead to a better understanding of these complex structures and give key parameters to optimize them further. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1556-276X 1931-7573 1556-276X |
DOI: | 10.1186/1556-276X-6-206 |