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Quantized Hall effect yields e2/h to a part per million

JUN 01, 1981

Several recent experiments investigating the Hall effect in its quantummechanical limit have made it clear that Nature is providing us with a fundamental unit of resistance. The extraordinary accuracy with which these experiments appear to be obeying the naive theoretical expression for the quantized Hall resistance is at once promising and puzzling.

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Volume 34, Number 6

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