Exploring Corbino Structures for Thermoelectric Transport Under QHE Regime

M. REAL; P. GIUDICI; D. GRESTA; J. SIEPE; A. TONINA; L. ARRACHEA; W. DIETSCE

Paris

Conferencia; - Conference on Precision Electromagnetic 2018; 2018

This project explores the advantages of Corbinostructures to measure thermoelectric transport in the QuantumHall regime and its metrological applications. Corbino deviceswere produced from GaAs/AlGaAs heterostructures, whose mobilitiesranged from 0.4 to 10 106 cm2=Vs. They have twoor several metal contacts to the 2D gas (2DEG) and a centralresistive heater. We investigate effects of such contact (ring)disposition and thermal transport by means of its heater.Index Terms?Measurement, measurement techniques, metrology,Hall effect, two-dimensional electron gas, heterojunctions,semiconductor devices, thermoelectric devices.