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

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

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

We study the single-impurity Anderson model out of equilibrium under the influence of a bias voltage φ and a magnetic field B. We investigate the interplay between the shift (ω_B) of the Kondo peak in the spin-resolved density of states (DOS) and the one (φ_B) of the conductance anomaly. In agreement with experiments and previous theoretical calculations we find that, while the latter displays a rather linear behavior with an almost constant slope as a function of B down to the Kondo scale, the DOS shift first features a slower increase reaching the same behavior as φ_B only for |g| μ_B B << k_B T_K.Our auxiliary master equation approach yields highly accurate nonequilibrium results for the DOS and for the conductance all the way from within the Kondo up to the charge fluctuation regime, showing excellent agreement with a recently introduced scheme based on a combination of numerical renormalization group with time-dependent density matrix renormalization group.
Originalspracheenglisch
Aufsatznummer013030
Seitenumfang12
FachzeitschriftNew Journal of Physics
Jahrgang20
Ausgabenummer1
DOIs
PublikationsstatusVeröffentlicht - 22 Jan 2018

ASJC Scopus subject areas

  • !!Condensed Matter Physics

Fields of Expertise

  • Advanced Materials Science

Fingerprint Untersuchen Sie die Forschungsthemen von „Nonequilibrium Kondo effect in a magnetic field: Auxiliary master equation approach“. Zusammen bilden sie einen einzigartigen Fingerprint.

Dieses zitieren