A circuit with only resistors and unity gain amplifiers can be proven to be equivalent to the Ricketts and Kemeny electrical model of multiterminal quantum Hall effect (QHE) devices. By means of the new equivalent circuit, commercial software for electronic circuit analysis can be used to study a QHE measurement system. Moreover, it can be easily implemented, and we were able to build a circuit that simulates the electrical behavior of a QHE device. Particular care was taken in the design to reduce the effect of parasitic capacitances, which act as loads connected to the device terminals. Bootstrap buffers have been adopted to significantly reduce the capacitance of input stage. The small residual loading effect can be calculated and eliminated, allowing simulation of a QHE device with good accuracy. (C) 1999 American Institute of Physics. [S0034-6748(99)03004-X].
Electronic simulation of a multiterminal quantum Hall effect device / Sosso, Andrea; Capra, PIER PAOLO. - In: REVIEW OF SCIENTIFIC INSTRUMENTS. - ISSN 0034-6748. - 70:4(1999), pp. 2082-2086. [10.1063/1.1149717]
Electronic simulation of a multiterminal quantum Hall effect device
SOSSO, ANDREA;CAPRA, PIER PAOLO
1999
Abstract
A circuit with only resistors and unity gain amplifiers can be proven to be equivalent to the Ricketts and Kemeny electrical model of multiterminal quantum Hall effect (QHE) devices. By means of the new equivalent circuit, commercial software for electronic circuit analysis can be used to study a QHE measurement system. Moreover, it can be easily implemented, and we were able to build a circuit that simulates the electrical behavior of a QHE device. Particular care was taken in the design to reduce the effect of parasitic capacitances, which act as loads connected to the device terminals. Bootstrap buffers have been adopted to significantly reduce the capacitance of input stage. The small residual loading effect can be calculated and eliminated, allowing simulation of a QHE device with good accuracy. (C) 1999 American Institute of Physics. [S0034-6748(99)03004-X].I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
