69 citations · 309 across the 9 of their papers we have counts for
9 papers
Power-law approach to steady state in open lattices of non-interacting electrons
M. V. Medvedyeva, S. Kehrein
We address the question of how a non-equilibrium steady state (NESS) is reached in the Linbdladian dynamics of an open quantum system. We develop an expansion of the density matrix…
Spatiotemporal buildup of the Kondo screening cloud
M. Medvedyeva, A. Hoffmann, S. Kehrein
We investigate how the Kondo screening cloud builds up as a function of space and time. Starting from an impurity spin decoupled from the conduction band, the Kondo coupling is swi…
Exact results for nonlinear ac-transport through a resonant level model
Pei Wang, Markus Heyl, Stefan Kehrein
We obtain exact results for the transport through a resonant level model (noninteracting Anderson impurity model) for rectangular voltage bias as a function of time. We study both…
Electron-avalanche amplifier based on the electronic Venturi effect
D. Taubert, G. J. Schinner, H. P. Tranitz +4
Scattering of otherwise ballistic electrons far from equilibrium is investigated in a cold two-dimensional electron system. The interaction between excited electrons and the degene…
Flow equation analysis of the anisotropic Kondo model
W. Hofstetter, S. Kehrein
We use the new method of infinitesimal unitary transformations to calculate zero temperature correlation functions in the strong-coupling phase of the anisotropic Kondo model. We f…
Symmetric Anderson impurity model with a narrow band
W. Hofstetter, S. Kehrein
The single channel Anderson impurity model is a standard model for the description of magnetic impurities in metallic systems. Usually, the bandwidth represents the largest energy…