Phys. Rev. Lett. 100, 246805 (2008) [4 pages]Interaction Correction to the Conductance of a Ballistic ConductorReceived 6 December 2007; published 20 June 2008 In disordered metals, electron-electron interactions are the origin of a small correction to the conductivity, the “Altshuler-Aronov correction.” Here we investigate the Altshuler-Aronov correction δGAA of a conductor in which the electron motion is ballistic and chaotic. We consider the case of a double quantum dot, which is the simplest example of a ballistic conductor in which δGAA is nonzero. The fact that the electron motion is ballistic leads to an exponential suppression of δGAA if the Ehrenfest time is larger than the mean dwell time τD or the inverse temperature ℏ/T. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.100.246805
DOI:
10.1103/PhysRevLett.100.246805
PACS:
73.23.−b, 05.45.Mt, 73.20.Fz
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