Title :
Zero-current voltage oscillations and non-linear transport in Quantum Hall GaAs-AlGaAs heterostructures
Author :
Sese, J. ; Camon, A. ; Rillo, C. ; Blanchet, J. ; Piquernal, F. ; Geneves, G.
Author_Institution :
Inst. de Ciencia de Mater. de Aragon, Zaragoza Univ., Spain
Abstract :
Zero-current voltage oscillations in Quantum Hall samples have been reported in literature. Its origin is not yet understood. Here we propose a possible explanation based on a thermoelectric effect caused by noise input and local differences in the carrier density near the voltage contacts. Experiments on non-linear transport in GaAs-AlGaAs heterostructures are presented.
Keywords :
III-V semiconductors; aluminium compounds; carrier density; gallium arsenide; quantum Hall effect; semiconductor heterojunctions; thermoelectricity; GaAs-AlGaAs; GaAs-AlGaAs heterostructure; carrier density; noise; nonlinear transport; quantum Hall effect; thermoelectric effect; zero-current voltage oscillation; Breakdown voltage; Electrical resistance measurement; Hall effect; Magnetic field measurement; Magnetic fields; Noise level; Noise shaping; Probes; Thermoelectricity; Voltage measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.699942
