Description:
<jats:p>
We have performed numerical simulations of the magnetotransport of open quantum dots with contacts supporting several modes.
We reproduce the zero field resistance peaks seen in experiments performed on such structures, a phenomenon previously attributed to weak localization. Our results, however, indicate that these peaks can have an entirely different origin, involving the zero field crossings of conductance resonance lines that reflect the underlying dot spectrum.
Even with <jats:italic>significant ensemble averaging</jats:italic>, the nature of these crossings largely determines the shape and width of the resistance peaks.
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