116 citations · 211 across the 5 of their papers we have counts for
5 papers
Decoherence in a Double-Dot Aharonov-Bohm Interferometer
Björn Kubala, David Roosen, Michael Sindel +2
Coherence in electronic interferometers is typically believed to be restored fully in the limit of small voltages, frequencies and temperatures. However, it is crucial to check thi…
Dynamics, Synchronization and Quantum Phase Transitions of Two Dissipative Spins
Peter P. Orth, David Roosen, Walter Hofstetter +1
We analyze the static and dynamical properties of two Ising-coupled quantum spins embedded in a common bosonic bath as an archetype of dissipative quantum mechanics. First, we eluc…
Spectral function of the Anderson impurity model at finite temperatures
Aldo Isidori, David Roosen, Lorenz Bartosch +2
Using the functional renormalization group (FRG) and the numerical renormalization group (NRG), we calculate the spectral function of the Anderson impurity model at zero and finite…
Nonequilibrium Spin Dynamics in the Ferromagnetic Kondo Model
Andreas Hackl, David Roosen, Stefan Kehrein +1
Motivated by recent experiments on molecular quantum dots we investigate the relaxation of pure spin states when coupled to metallic leads. Under suitable conditions these systems…
Nonequilibrium Dynamics of Anisotropic Large Spins in the Kondo Regime: Time-Dependent Numerical Renormalization Group Analysis
David Roosen, Maarten R. Wegewijs, Walter Hofstetter
We investigate the time-dependent Kondo effect in a single-molecule magnet (SMM) strongly coupled to metallic electrodes. Describing the SMM by a Kondo model with large spin S > 1/…