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Exciton condensate at a total filling factor of one in Corbino two-dimensional electron bilayers

Tiemann, L. ; Lok, J. G. S. ; Dietsche, W. ; Klitzing, Klaus von ; Muraki, K. ; Schuh, Dieter ; Wegscheider, Werner
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Date of publication of this fulltext: 01 Feb 2010 13:11


Abstract

Magnetotransport and drag measurements on a quasi-Corbino two-dimensional electron bilayer at a total filling factor of 1 (νT=1) reveal a drag voltage that is equal in magnitude to the drive voltage as soon as the two layers begin to form the expected νT=1 exciton condensate. The identity of both voltages remains present even at elevated temperatures of 0.25 K. The conductance of the drive layer ...

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