Four-terminal magnetoresistance of a two-dimensional electron-gas constriction in the ballistic regime
Physical review. B, Condensed matter1988Vol. 37(14), pp. 8534–8536
Citations Over TimeTop 1% of 1988 papers
H. van Houten, C. W. J. Beenakker, P. H. M. van Loosdrecht, T. J. Thornton, H. Ahmed, M. Pepper, C. T. Foxon, J. J. Harris
Abstract
A novel negative magnetoresistance effect is found in four-terminal measurements of the voltage drop across a short constriction of variable width in a high-mobility two-dimensional electron gas. The effect is interpreted as the suppression by a magnetic field of the geometrical constriction resistance in the ballistic regime. Quantitative agreement with a simple model based on a Landauer-type formula is obtained.
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