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Solid-state physics

Resistance is futile

With the right combination of microwave radiation and magnetic field, two-dimensional electron systems conduct electricity with zero resistance. But is this zero really zero, or is it negative resistance in disguise?

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Figure 1: Unmasking negative resistance.

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Durst, A. Resistance is futile. Nature 442, 752–753 (2006). https://doi.org/10.1038/442752a

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