Nonequilibrium transport at a dissipative quantum phase transition

Chung-Hou Chung*, Karyn Le Hur, Matthias Vojta, Peter Wölfle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

We investigate the nonequilibrium transport near a quantum phase transition in a generic and relatively simple model, the dissipative resonant level model, that has many applications for nanosystems. We formulate a rigorous mapping and apply a controlled frequency-dependent renormalization group approach to compute the nonequilibrium current in the presence of a finite bias voltage V and a finite temperature T. For V→0, we find that the conductance has its well-known equilibrium form, while it displays a distinct nonequilibrium profile at finite voltage.

Original languageEnglish
Article number216803
JournalPhysical Review Letters
Volume102
Issue number21
DOIs
StatePublished - 26 May 2009

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