376 citations · 712 across the 10 of their papers we have counts for
14 papers
Shedding light on non-equilibrium dynamics of a spin coupled to fermionic reservoir
Hakan E. Türeci, M. Hanl, M. Claassen +7
A single confined spin interacting with a solid-state environment has emerged as one of the fundamental paradigms of mesoscopic physics. In contrast to standard quantum optical sys…
Density matrix renormalization group study of a quantum impurity model with Landau-Zener time-dependent Hamiltonian
Cheng Guo, Andreas Weichselbaum, Stefan Kehrein +2
We use the adaptive time-dependent density matrix renormalization group method (t-DMRG) to study the nonequilibrium dynamics of a benchmark quantum impurity system which has a time…
A quantum criticality perspective on the charging of narrow quantum-dot levels
V. Kashcheyevs, C. Karrasch, T. Hecht +3
Understanding the charging of exceptionally narrow levels in quantum dots in the presence of interactions remains a challenge within mesoscopic physics. We address this fundamental…
Kondo decoherence: finding the right spin model for iron impurities in gold and silver
T. A. Costi, L. Bergqvist, A. Weichselbaum +8
We exploit the decoherence of electrons due to magnetic impurities, studied via weak localization, to resolve a longstanding question concerning the classic Kondo systems of Fe imp…
Matrix product state comparison of the numerical renormalization group and the variational formulation of the density matrix renormalization group
Hamed Saberi, Andreas Weichselbaum, Jan von Delft
Wilson's numerical renormalization group (NRG) method for solving quantum impurity models yields a set of energy eigenstates that have the form of matrix product states (MPS). Whit…
Realistic modelling of quantum point contacts subject to high magnetic fields and with current bias at out of linear response regime
S. Arslan, E. Cicek, D. Eksi +3
The electron and current density distributions in the close proximity of quantum point contacts (QPCs) are investigated. A three dimensional Poisson equation is solved self-consist…