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Quantum physics

Electrons in perfect drag


A neat experiment shows that if a current is sent through one of two adjacent conducting layers placed in a strong magnetic field, a quantum effect generates an exactly equal but opposite current in the other layer. See Letter p.481

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Figure 1: Against the current.


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Correspondence to Steven M. Girvin.

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Girvin, S. Electrons in perfect drag. Nature 488, 464–465 (2012).

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