Nonequilibrium Kondo effect in a magnetic field: Auxiliary master equation approach

Delia Maria Fugger, Antonius Dorda, Frauke Schwarz, Jan von Delft, Enrico Arrigoni

Publikation: KonferenzbeitragPoster

Abstract

We solve the single-impurity Anderson model in a magnetic field and out of equilibrium with an auxiliary master equation approach [1,2,3]. Employing Matrix Product States techniques to solve the many-body Lindblad equation allows us to generate highly accurate results, especially for the spectral functions. In equilibrium we find a remarkable agreement with spectral functions obtained with NRG, cf. [3].
The application of a bias voltage V and a magnetic field B both individually result in a splitting of the Kondo resonance around the Kondo temperature. With our method we can resolve a four-peak structure in the spectral function for nonzero B and V, due to both effects. This four-peak structure manifests itself in the differential conductance, which is very well accessible by experiments.
We finally compare our results to recent experiments [4,5] and draw conclusions about the underlying spectral functions. We find that our results nicely agree with experimental data also outside the Kondo regime.


[1] E. Arrigoni et al., Phys. Rev. Lett. 110, 086403 (2013)
[2] A. Dorda et al., Phys. Rev. B 89, 165105 (2014)
[3] A. Dorda et al., Phys. Rev. B 92, 125145 (2015)
[4] A. V. Kretinin et al., Phys. Rev. B 84, 245316 (2011)
[5] A. V. Kretinin et al., Phys. Rev. B 85, 201301(R) (2012)
Originalspracheenglisch
PublikationsstatusVeröffentlicht - 20 Jun 2017
Veranstaltung645. WE-Heraeus-Seminar: Emergent Phenomena and Universality in Correlated Quantum Systems Far Away from Equilibrium - Physikzentrum Bad Honnef, Bad Honnef, Deutschland
Dauer: 18 Jun 201722 Jun 2017
https://indico.ph.tum.de/event/3705/?ovw=True

Seminar

Seminar645. WE-Heraeus-Seminar: Emergent Phenomena and Universality in Correlated Quantum Systems Far Away from Equilibrium
LandDeutschland
OrtBad Honnef
Zeitraum18/06/1722/06/17
Internetadresse

ASJC Scopus subject areas

  • !!Condensed Matter Physics

Fields of Expertise

  • Advanced Materials Science

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