Terahertz Radiation Detection by Field Effect Transistor in Magnetic Field

Details Terahertz Radiation Detection by Field Effect Transistor in Magnetic Field Terahertz Radiation Detection by Field Effect Transistor in Magnetic Field

2009-04-14

arxiv.org/abs/0904.2081v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

We report on terahertz radiation detection with InGaAs/InAlAs Field Effect Transistors in quantizing magnetic field. The photovoltaic detection signal is investigated at 4.2 K as a function of the gate voltage and magnetic field. Oscillations analogous to the Shubnikov-de Haas oscillations, as well as their strong enhancement at the cyclotron resonance, are observed. The results are quantitatively described by a recent theory, showing that the detection is due to rectification of the terahertz radiation by plasma waves related nonlinearities in the gated part of the channel.

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