Energy and particle currents in a driven integrable system

D. Crivelli, P. Prelovšek, and M. Mierzejewski
Phys. Rev. B 90, 195119 – Published 11 November 2014

Abstract

We study the ratio of the energy and particle currents (jE/jN) in an integrable one-dimensional system of interacting fermions. Both currents are driven by a finite (nonzero) dc electric field. In doped insulators, where the local conserved quantities saturate the so-called Mazur bound on the charge stiffness, jE/jN agrees with the linear-response theory, even though such agreement may be violated for each current alone. However, in the metallic regime with a nonsaturated Mazur bound, the ratio jE/jN in a driven system is shown to be much larger than predicted by the linear-response theory.

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  • Received 11 September 2014
  • Revised 24 October 2014

DOI:https://doi.org/10.1103/PhysRevB.90.195119

©2014 American Physical Society

Authors & Affiliations

D. Crivelli1, P. Prelovšek2,3, and M. Mierzejewski1

  • 1Institute of Physics, University of Silesia, 40-007 Katowice, Poland
  • 2Faculty of Mathematics and Physics, University of Ljubljana, SI-1000 Ljubljana, Slovenia
  • 3J. Stefan Institute, SI-1000 Ljubljana, Slovenia

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Issue

Vol. 90, Iss. 19 — 15 November 2014

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