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Cooling a magnetic resonance force microscope via the dynamical back action of nuclear spins
We analyze the back-action influence of nuclear spins on the motion of the cantilever of a magnetic force resonance microscope. We calculate the contribution of nuclear spins to the damping and frequency...
PublicationsAre Volume Plasmons Excitable by Classical Light?
Volume plasmons are collective eigenmodes of the free-electron gas inside a metal. Because of their longitudinal character and the transversal nature of light, the photoexcitation of volume plasmons is...
PublicationsFluorescence signals of core-shell quantum dots enhanced by single crystalline gold caps on silicon nanowires
We use nanoscale (20–300 nm in diameter) single crystalline gold (Au)-caps on silicon nanowires (NWs) grown by the vapor–liquid–solid (VLS) growth mechanism to enhance the fluorescence photoluminescence...
PublicationsCurrent-induced vortex dynamics and pinning potentials probed by homodyne detection
Using a homodyne detection scheme, we show that we can determine the polarity and chirality of a magnetic vortex in an asymmetric magnetic disk as well as the resonance frequency and phase shift of the...
PublicationsInfluence of slanted nanostripe edges on the dynamics of magnetic domain walls
We report a combined experimental and theoretical study on the influence of slanted nanostripe edges on the magnetic domain wall (DW) dynamics in permalloy nanostripes. The DWs show a significantly different...
PublicationsExperimentally verified design guidelines for minimizing the gray zone width of Josephson comparators
We investigated the gray zone width of Josephson comparators by means of circuit simulations and experiments, looking at the dependences on different circuit parameters and topologies. Eight different...
PublicationsLosses in coplanar waveguide resonators at millikelvin temperatures
We study the loss rate for a set of lambda/2 coplanar waveguide resonators at millikelvin temperatures (20–900 mK) and different applied powers (3•10−19–10−12 W). The loss rate becomes power...
PublicationsMultiphoton excitations and inverse population in a system of two flux qubits
We study the multiphoton spectroscopy of artificial solid-state four-level quantum system. This system is formed by two coupled superconducting flux qubits. When multiple driving frequency of the applied...
PublicationsSplitting of a moving transverse domain wall in a magnetic nanostripe in a transverse field
The field-driven domain-wall dynamics in magnetic nanostripes under the influence of transverse fields was examined experimentally and by numerical simulations. For a small range of transverse fields in...
PublicationsSilicon nanowire oxidation: the influence of sidewall structure and gold distribution
The oxidation behavior of Si nanowires (SiNWs) grown by the gold (Au) catalyzed vapor–liquid–solid (VLS) growth process in an electron beam evaporation (EBE) reactor is studied. The VLS SiNWs exhibit...
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