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Can 2-D electron systems have zero resistance?

Nature: Electrons confined to the interface between two semiconductors form what is known as a two-dimensional electron gas - essentially, a two-dimensional metal. These materials provide a playground for the exploration of fundamental physics. Writing in Physical Review Letters, M. A. Zudov, R. R. Du, L. N. Pfeiffer, and K. W. West describe a experiment designed to shed light on one such phenomenon: 'zero-resistance' states induced by the application of a magnetic field and microwave radiation.

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Posted by Physics Today on August 21, 2006 11:01 AM |

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