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Nonequilibrium quantum transport through a dissipative resonant level

Publication ,  Journal Article
Chung, CH; Le Hur, K; Finkelstein, G; Vojta, M; Wölfle, P
Published in: Physical Review B - Condensed Matter and Materials Physics
June 21, 2013

The resonant-level model represents a paradigmatic quantum system which serves as a basis for many other quantum impurity models. We provide a comprehensive analysis of the nonequilibrium transport near a quantum phase transition in a spinless dissipative resonant-level model, extending earlier work. A detailed derivation of a rigorous mapping of our system onto an effective Kondo model is presented. A controlled energy-dependent renormalization-group approach is applied to compute the nonequilibrium current in the presence of a finite bias voltage V. In the linear-response regime V→0, the system exhibits as a function of the dissipative strength a localized-delocalized quantum transition of the Kosterlitz-Thouless (KT) type. We address fundamental issues of the nonequilibrium transport near the quantum phase transition: Does the bias voltage play the same role as temperature to smear out the transition? What is the scaling of the nonequilibrium conductance near the transition? At finite temperatures, we show that the conductance follows the equilibrium scaling for V

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Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

June 21, 2013

Volume

87

Issue

24

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

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Chung, C. H., Le Hur, K., Finkelstein, G., Vojta, M., & Wölfle, P. (2013). Nonequilibrium quantum transport through a dissipative resonant level. Physical Review B - Condensed Matter and Materials Physics, 87(24). https://doi.org/10.1103/PhysRevB.87.245310
Chung, C. H., K. Le Hur, G. Finkelstein, M. Vojta, and P. Wölfle. “Nonequilibrium quantum transport through a dissipative resonant level.” Physical Review B - Condensed Matter and Materials Physics 87, no. 24 (June 21, 2013). https://doi.org/10.1103/PhysRevB.87.245310.
Chung CH, Le Hur K, Finkelstein G, Vojta M, Wölfle P. Nonequilibrium quantum transport through a dissipative resonant level. Physical Review B - Condensed Matter and Materials Physics. 2013 Jun 21;87(24).
Chung, C. H., et al. “Nonequilibrium quantum transport through a dissipative resonant level.” Physical Review B - Condensed Matter and Materials Physics, vol. 87, no. 24, June 2013. Scopus, doi:10.1103/PhysRevB.87.245310.
Chung CH, Le Hur K, Finkelstein G, Vojta M, Wölfle P. Nonequilibrium quantum transport through a dissipative resonant level. Physical Review B - Condensed Matter and Materials Physics. 2013 Jun 21;87(24).

Published In

Physical Review B - Condensed Matter and Materials Physics

DOI

EISSN

1550-235X

ISSN

1098-0121

Publication Date

June 21, 2013

Volume

87

Issue

24

Related Subject Headings

  • Fluids & Plasmas
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences