133 citations · 345 across the 6 of their papers we have counts for
6 papers
Optical conductivity of the Hubbard chain away from half filling
Alexander C. Tiegel, Thomas Veness, Piet E. Dargel +4
We consider the optical conductivity in the metallic phase of the one-dimensional Hubbard model. Our results focus on the vicinity of half filling and the frequency regime…
Interplay between Kondo effect and Ruderman-Kittel-Kasuya-Yosida interaction
Henning Prüser, Piet E. Dargel, Mohammed Bouhassoune +4
The interplay between the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction and the Kondo effect is expected to provide the driving force for the emergence of many phenomena in stro…
Spin-spin correlations between two Kondo impurities coupled to an open Hubbard chain
A. C. Tiegel, P. E. Dargel, K. A. Hallberg +2
In order to study the interplay between Kondo and Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction, we calculate the spin-spin correlation functions between two Kondo impurities co…
Lanczos algorithm with Matrix Product States for dynamical correlation functions
P. E. Dargel, A. Wöllert, A. Honecker +3
The density-matrix renormalization group (DMRG) algorithm can be adapted to the calculation of dynamical correlation functions in various ways which all represent compromises betwe…
Long-range Kondo signature of a single magnetic impurity
Henning Prüser, Martin Wenderoth, Piet E. Dargel +4
The Kondo effect, one of the oldest correlation phenomena known in condensed matter physics, has regained attention due to scanning tunneling spectroscopy (STS) experiments perform…
Adaptive Lanczos-vector method for dynamic properties within the density-matrix renormalization group
P. E. Dargel, A. Honecker, R. Peters +2
Current widely-used approaches to calculate spectral functions using the density-matrix renormalization group in frequency space either necessarily include an artificial broadening…