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Article
Harninkontinenz des Mannes
Die Belastungsinkontinenz des Mannes ist überwiegend iatrogen bedingt, wobei die radikale Prostatektomie mit einer persistierenden Inkontinenzrate von 10–25 % die häufigste Ursache ist. Die primäre Therapie de...
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Chapter and Conference Paper
Λ-Processes Induced by Chirped Lasers
We analytically treat model Λ-processes driven by chirped lasers. The obtained results (consistent with previous numericalfindings) bring insight into the microscopic origin of the ERASE functionality via freq...
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Chapter and Conference Paper
Ultrafast Spin Flip on Homodinuclear Clusters
Using fully ab initio calculations we investigate the laser-induced ultrafast spin flip on the magnetic homodinuclear clusters FeOFe and NiONi. The oxygen atoms lower the total symmetry of the clusters inducing s...
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Chapter and Conference Paper
Effect of the Variation of the Bond Length on Laser-Induced Spin-Flip Scenarios at Ni2
We investigate laser-induced spin-dynamics scenarios on a nickel dimer at various interatomic distances. Successful spin-flip processes based on highly correlated abinitio calculations are established and analyze...
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Article
Adjustierbare transobturatorische Schlingensysteme beim Mann
Zur Behandlung der persistierenden Belastungsinkontinenz nach Prostataoperationen werden heute in den Leitlinien neben dem artifiziellen Sphinkter auch sog. „male slings“ empfohlen. Mittlerweile sind diverse S...
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Article
Diagnostik und operative Therapie der Postprostatektomie-Belastungsinkontinenz
Für die operative Behandlung der Postprostatektomie-Belastungsinkontinenz stehen heute diverse Therapieoptionen zur Verfügung. Hierzu zählen adjustierbare und funktionelle Schlingensysteme, der künstliche Schl...
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Article
Moderne operative Therapiemöglichkeiten der männlichen Belastungsinkontinenz
Die postoperative Harninkontinenz stellt nach wie vor die gefürchtetste Komplikation der radikalen Prostatektomie dar, da sie einen stark negativen Einfluss auf die Lebensqualität und Aktivität des Patienten h...
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Article
Quantum Isobaric Process in Ni2
Using the excited electronic states of Ni2, we numerically build isobaric processes starting from different bond lengths and initial temperatures. Due to the complexity of the electronic structure of Ni2, the iso...
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Article
Reply: "Is the controversy over femtosecond magneto-optics really solved?"
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Article
Optical absorption spectra of finite systems from a conserving Bethe-Salpeter equation approach
We present a method for computing optical absorption spectra by means of a Bethe-Salpeter equation approach, which is based on a conserving linear response calculation for electron-hole coherences in the pres...
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Article
Conserving quasiparticle calculations for small metal clusters
A novel approach for GW-based calculations of quasiparticle properties for finite systems is presented, in which the screened interaction is obtained directly from a linear response calculation of the density-...
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Article
Paradigm of the time-resolved magneto-optical Kerr effect for femtosecond magnetism
Conventional understanding of the magneto-optical Kerr effect, in which changes in the magnetization of a material cause changes in the polarization of reflected light, assumes that this incident light is cont...
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Article
Collective electronic excitations in clusters in the vicinity of metal surfaces
We study the collective excitations of metal clusters approaching a metal surface. Using a simple model for the frequency-dependent dielectric constant ε(ω) and the multiple scattering method, we numerically i...
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Article
Sliding performance of polymer composites in liquid hydrogen and liquid nitrogen
Outstanding features favour the application of polymers and polymer composites in low-temperature technology. The booming hydrogen technology is a challenge for these materials, which are considered as seals a...
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Chapter and Conference Paper
Ultrafast Magnetic Switching and Nonlinear Optics in NiO(100)
An embedded cluster approach is applied to study the electronic excitations on the NiO(001) surface. Starting from the unrestricted Hartree-Fock level of theory, we calculate the ground-state properties to pro...
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Article
Crystal-field Effect on Magnetic Moment and Exchange-Coupling for Fe/W(100) and Fe/W(110)
The Full-potential Linearized Augmented Plane-wave (FP-LAPW) method was employed to investigate the magnetic properties of 1 monolayer (ML) Fe on W(100) and W(110) substrates. Magnetic moments of the Fe overla...
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Article
Electron dynamics in Na and Pt clusters from time-dependent Hartree-Fock theory
We present a method for the numerical investigation of the electron dynamics in small metallic clusters in intense laser fields. We obtain information about collective excitations and relaxation processes in t...
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Article
Femtosecond dynamics of spin-dependent SHG response from NiO (001)
Based on a parameterized electronic many-body theory we calculate the spectrum of optical second-harmonic generation (SHG) on an antiferromagnetic (AF) surface: NiO (001). The occurrence of AF spectral lines i...
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Article
Nonlinear surface magneto-optics of ferromagnetic Ni/Cu(001) from first principles
We present first-principles calculations of the nonlinear optical (NLO) response of a Ni/Cu(001) bilayer. The calculations are based on the full potential linearized augmented plane wave (FLAPW) method with th...
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Chapter
Laser-Control of Ferro- and Antiferromagnetism
We set up the theory of ultrafast spin dynamics in the ferromagnetic Ni and antiferromagnetic NiO. Investigating the speed limits of spin dynamics is of a very high importance for future computer memory design...
