Mesoscopic Coulomb Drag, Broken Detailed Balance, and Fluctuation Relations

Rafael Sánchez, Rosa López, David Sánchez, and Markus Büttiker
Phys. Rev. Lett. 104, 076801 – Published 16 February 2010

Abstract

When a biased conductor is put in proximity with an unbiased conductor a drag current can be induced in the absence of detailed balance. This is known as the Coulomb drag effect. However, even in this situation far away from equilibrium where detailed balance is explicitly broken, theory predicts that fluctuation relations are satisfied. This surprising effect has, to date, not been confirmed experimentally. Here we propose a system consisting of a capacitively coupled double quantum dot where the nonlinear fluctuation relations are verified in the absence of detailed balance.

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  • Received 16 October 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.076801

©2010 American Physical Society

Authors & Affiliations

Rafael Sánchez1, Rosa López2, David Sánchez2, and Markus Büttiker1

  • 1Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland
  • 2Departament de Física, Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain

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Vol. 104, Iss. 7 — 19 February 2010

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