The effect of carrier density gradients on magnetotransport data measured in Hall bar geometry

Details The effect of carrier density gradients on magnetotransport data measured in Hall bar geometry The effect of carrier density gradients on magnetotransport data measured in Hall bar geometry

2003-06-03

arxiv.org/abs/cond-mat/0306063v1

Solid State Communications 130 (2004) 705

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 8 figures

Scientific paper

10.1016/j.ssc.2004.02.021

We have measured magnetotransport of the two-dimensional electron gas in a Hall bar geometry in the presence of small carrier density gradients. We find that the longitudinal resistances measured at both sides of the Hall bar interchange by reversing the polarity of the magnetic field. We offer a simple explanation for this effect and discuss implications for extracting conductivity flow diagrams of the integer quantum Hall effect.

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