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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2010

Photocurrent analysis of quantum cascade detectors by magnetotransport

Résumé

Photocurrent measurements have been performed on a quantum cascade detector structure under strong magnetic field B applied parallel to the growth axis. The photocurrent shows oscillations as a function of B. In order to describe this 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 these structures. We present a calculation of the 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 identify key parameters to optimize them further.
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Dates et versions

hal-00518157 , version 1 (16-09-2010)

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  • HAL Id : hal-00518157 , version 1

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François-Régis Jasnot, Nicolas Péré-Laperne, Louis-Anne de Vaulchier, Yves Guldner, Francesca Carosella, et al.. Photocurrent analysis of quantum cascade detectors by magnetotransport. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2010, 82, pp.125447. ⟨hal-00518157⟩
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