This thesis investigates the influence of local excitations by ultra-short laser pulses in strongly correlated manganites. It focuses on the nonlinear transport properties which are connected to the correlations between ...

Due to the perfect epitaxial match of ferromagnetic MnGa on GaN and spin transport properties of GaN (long spin life time), the hybride MnGa/GaN is a promising material for future spintronic devices to examine. The ...

During the last thirty years the memory space per square centimeter on the memory unit was increased exponential. The reason for such strong improvement is the continuous decreasing of the unit cells down to nanometer ...

The irradiation of tetrahedral amorphous carbon (ta-C) with swift heavy ions leads to the formation of conductive microscopic ion tracks with diameters of about 10 nm. This phenomena depends on the sp² to sp³ hybridization-ratio ...

Including the spin degree of freedom into electronic circuits e.g. as non-volatile memory devices, requires the exact knowledge of the speed with which writing information is possible. All-optical pump-probe experiments ...

When laser light of high intensity is focused into water, a plasma is formed in the area of the focus. This process is called optical breakdown and is numerically investigated for femtosecond ...

The site occupation of ternary elements in an intermetallic phase is an important area in materials science. Up to now X-Ray based methods and a TEM based method called Atom Location by ...

The diffraction limit in far-field fluorescence microscopy can be overcome by photoswitching the marker molecules between a fluorescent and a non-fluorescent state. Photoswitching enables ...

STED microscopy improves the resolution of fluorescence microscope by effectively quenching the population of the excited state in the outer regions of the focus. The resolution capability in STED microscopy has already ...

The magnetization of a ferromagnetic nanostructure can be manipulated by a spin-polarized electrical current. Thus the switching mechanisms in Co/Cu/Co trilayers as well as in Co single ...