33 citations · 52 across the 2 of their papers we have counts for
9 papers · 1 filter
Signature of chirality in scanning-probe imaging of charge flow in graphene
Matthias Braun, Luca Chirolli, Guido Burkard
We theoretically propose to directly observe the chiral nature of charge carriers in graphene mono- and bilayers within a controlled scattering experiment. The charge located on a…
Theory of a Magnetically-Controlled Quantum-Dot Spin Transistor
Daniel Urban, Matthias Braun, Jürgen König
We examine transport through a quantum dot coupled to three ferromagnetic leads in the regime of weak tunnel coupling. A finite source-drain voltage generates a nonequilibrium spin…
Frequency-Dependent Current Noise through Quantum-Dot Spin Valves
Matthias Braun, Jürgen König, Jan Martinek
We study frequency-dependent current noise through a single-level quantum dot connected to ferromagnetic leads with non-collinear magnetization. We propose to use the frequency-dep…
Faraday-rotation fluctuation spectroscopy with static and oscillating magnetic fields
Matthias Braun, Jürgen König
By Faraday-rotation fluctuation spectroscopy one measures the spin noise via Faraday-induced fluctuations of the polarization plane of a laser transmitting the sample. In the fist…
Manipulating Single Spins in Quantum Dots Coupled to Ferromagnetic Leads
Matthias Braun, Jürgen König, Jan Martinek
We discuss the possibility to generate, manipulate, and probe single spins in single-level quantum dots coupled to ferromagnetic leads. The spin-polarized currents flowing between…
Probing level renormalization by sequential transport through double quantum dots
Bernhard Wunsch, Matthias Braun, Jürgen König +1
We study electron transport through double quantum dots in series. The tunnel coupling of the discrete dot levels to external leads causes a shift of their energy. This energy reno…