The role of dissipation in quantum Hall voltage profiles

The effects of temperature and Ohmic conduction on the field configurations in IQHE samples are investigated. The dissipative effects are identified as the source of the flowing inside the sample of currents in the experiments. The regimes for the Hall effect observation are traced: the edge current one, working at time intervals shorter than the relaxation time, and the bulk current one related to the stationary state in the presence of dissipation. An approximate analytical solution of the equations describing the steady state is found, which satisfactorily describes the oscillations of the experimental Hall voltage with the magnetic field for interior sample probes, while maintaining the quantization of the Hall resistance. (author). 8 refs, 2 figs