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16th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON 16), France (2009)
Plasma waves Terahertz detection by field effect transistor in Quantinzing magnetic fields
S. Boubanga-Tombet1, F. Teppe1, W. Knap1, K. Karpierz2, J. Lusakowski2, M. Grynberg2, M. I. Dyakonov3, J. Lyonnet, J. M. Peiris
(11/2009)

Detection of THz radiation by a Field Effect Transistor InGaAs/InAlAs transistor was investigated at 4.2 K as a function of the magnetic field and gate voltage. We observed oscillations of the photovoltaic signal analogous to Shubnikov-de Haas oscillations, as well as their strong enhancement at the cyclotron resonance conditions. The results are successfully quantitatively described within the frame of a recent theory, taking into account a new source of nonlinearity related to Shubnikov-de Haas effect. We show that the detection is due to gated plasmon.
1 :  GES - Groupe d'étude des semiconducteurs
2 :  Institute of Experimental Physics, Warsaw University
3 :  LPTA - Laboratoire de Physique Théorique et Astroparticules
Physique/Physique/Physique Générale