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We report on our theoretical investigation of the effects of the confiningpotential profile and sample size on the electron velocity distribution in(narrow) quantum-Hall systems. The electrostatic properties of the electronsystem are obtained by the Thomas-Fermi-Poisson nonlinear screening theory. Theelectron velocity distribution as a function of the lateral coordinate isobtained from the slope of the screened potential at the Fermi level and withinthe incompressible strips (ISs). We compare our findings with the recentexperiments.Comment: 8 pages, 6 figure

Theoretical investigation of the effect of sample properties on the electron velocity in quantum Hall bars