Plasma waves Terahertz detection by field effect transistor in Quantinzing magnetic fields

S. Boubanga-Tombet (1) , F. Teppe (1) , W. Knap (1) , K. Karpierz (2) , J. Lusakowski (2) , M. Grynberg (2) , M. I. Dyakonov (3) , J. Lyonnet , J. M. Peiris

1 GES - Groupe d'étude des semiconducteurs
2 IFD - Institute of Experimental Physics [Warsaw]
3 LPTA - Laboratoire de Physique Théorique et Astroparticules

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.

Domaines: Physique Générale [physics.gen-ph]

S. Boubanga-Tombet, F. Teppe, W. Knap, K. Karpierz, J. Lusakowski, et al.. Plasma waves Terahertz detection by field effect transistor in Quantinzing magnetic fields. 16th International Conference on Electron Dynamics in Semiconductors, Optoelectronics and Nanostructures (EDISON 16), Aug 2009, France. pp.2083, ⟨10.1088/1742-6596/193/1/012083⟩. ⟨hal-00546391⟩