Magnetotransport in quantum cascade detectors: analyzing the current under illumination
- Resource Type
- Brief Communication
- Authors
- Jasnot, François-Régis; Péré-Laperne, Nicolas; de Vaulchier, Louis-Anne; Guldner, Yves; Carosella, Francesca; Ferreira, Robson; Buffaz, Amandine; Doyennette, Laetitia; Berger, Vincent; Carras, Mathieu; Marcadet, Xavier
- Source
- Nanoscale Research Letters. December 2011 6(1):1-4
- Subject
- Language
- English
- ISSN
- 1556-276X
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.