Theoretical Investigation of Local Electron Temperature in Quantum Hall Systems

Details Theoretical Investigation of Local Electron Temperature in Quantum Hall Systems Theoretical Investigation of Local Electron Temperature in Quantum Hall Systems

2012-03-13

arxiv.org/abs/1203.2774v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 4 figures

Scientific paper

10.1016/j.physe.2012.02.020

In this work we solve thermo-hydrodynamical equations considering a two dimensional electron system in the integer quantum Hall regime, to calculate the spatial distribution of the local electron temperature. We start from the self-consistently calculated electrostatic and electrochemical potentials in equilibrium. Next, by imposing an external current, we investigate the variations of the electron temperature in the linear-response regime. Here a local relation between the electron density and conductivity tensor elements is assumed. Following the Ohm's law we obtain local current densities and by implementing the results of the thermo-hydrodynamical theory, calculate the local electron temperature. We observe that the local electron temperature strongly depends on the formation of compressible and incompressible strips.

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