Terahertz detection by InGaAs HEMTs in quantizing magnetic fields: Relation between magnetoresistance and photovoltaic response

THz detection by plasma wave mechanism in InGaAs HEMTs is studied in high/quantizing magnetic fields regime. The correlation between the photovoltaic response and magnetoresistance is revealed. It allows to explain the nature of strong oscillations observed in the transistor Terahertz photoresponse.