Phys. Rev. Lett. 98, 186801 (2007) [4 pages]Absolute Negative Resistance Induced by Directional Electron-Electron Scattering in a Two-Dimensional Electron GasReceived 3 July 2006; published 30 April 2007 A three-terminal device formed by two electrostatic barriers crossing an asymmetrically patterned two-dimensional electron gas displays an unusual potential depression at the middle contact, yielding absolute negative resistance. The device displays momentum and current transfer ratios that far exceed unity. The observed reversal of the current or potential in the middle terminal can be interpreted as the analog of Bernoulli’s effect in a Fermi liquid. The results are explained by directional scattering of electrons in two dimensions. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.186801
DOI:
10.1103/PhysRevLett.98.186801
PACS:
73.23.Ad, 73.50.Fq, 73.50.Gr
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