Performance and Cryogenics Effects of a Split-Drain Magfet

P.J. García-Ramírez, F. Sandoval-Ibarra, and E.A. Gutiérrez-Domínguez (Mexico)


Sensors, Cryoelectronics, Integrated circuits


A split-drain MAGFET has been designed for detecting magnetic fields at low temperature. In this design a key parameter is the Hall angle, which indicates the current line deviation due to the Lorentz force acting on the charge carriers. If temperature is lowered, the carrier mobility increases, therefore an increase in carrier deflection is expected. As a consequence the split-drain MAGFET is able to detect magnetic fields below 1mT at 77K with low power consumption. Experimental results of a wide temperature range (77K

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