312 citations · 5.8k across the 176 of their papers we have counts for
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Effects of short-range interactions on transport through quantum point contacts: A numerical approach
Andreas Lassl, Peter Schlagheck, Klaus Richter
We study electronic transport through a quantum point contact, where the interaction between the electrons is approximated by a contact potential. Our numerical approach is based o…
Effect of pitchfork bifurcations on the spectral statistics of Hamiltonian systems
Marta Gutiérrez, Matthias Brack, Klaus Richter +1
We present a quantitative semiclassical treatment of the effects of bifurcations on the spectral rigidity and the spectral form factor of a Hamiltonian quantum system defined by tw…
Effect of magnetic pair breaking on Andreev bound states and resonant supercurrent in quantum dot Josephson junctions
Grygoriy Tkachov, Klaus Richter
We propose a model for resonant Josephson tunneling through quantum dots that accounts for Cooper pair-breaking processes in the superconducting leads caused by a magnetic field or…
Loschmidt echo decay from local boundary perturbations
Arseni Goussev, Klaus Richter
We investigate the sensitivity of the time evolution of semiclassical wave packets in two-dimensional chaotic billiards with respect to local perturbations of their boundaries. For…
Zeeman ratchets for ballistic spin currents
Matthias Scheid, Michael Wimmer, Dario Bercioux +1
We investigate the possiblity of creating directed spin-polarized currents in a two-dimensional electron gas (2DEG) subject to an asymmetric magnetic field and an external adiabati…
Dynamical symmetry breaking in transport through molecules
Andrea Donarini, Milena Grifoni, Klaus Richter
We analyze the interplay between vibrational and electronic degrees of freedom in charge transport across a molecular single-electron transistor. We focus on the wide class of mole…
Coherent spin ratchets: A spin-orbit based quantum ratchet mechanism for spin-polarized currents in ballistic conductors
Matthias Scheid, Andreas Pfund, Dario Bercioux +1
We demonstrate that the combined effect of a spatially periodic potential, lateral confinement and spin-orbit interaction gives rise to a quantum ratchet mechanism for spin-polariz…