Dresden 2014 – wissenschaftliches Programm

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MI: Fachverband Mikrosonden

MI 8: Poster: Microanalysis and Microscopy

MI 8.10: Poster

Mittwoch, 2. April 2014, 17:00–19:30, P4

Study of core-shell nanowires by kinematic scattering theory — •Thilo Krause and Michael Hanke — Paul Drude Institut für Festkörperelektronik, Hausvogteiplatz 5-7, D-10117 Berlin, Germany

We investigate GaAs/InGaAs/GaAs core-shell nanowires with respect to strain and morphology. We vary parameters such as Indium concentration and shell thickness which can also be controlled during the nanowire growth. For different models we perform kinematic scattering simulations based on the finite element method (FEM). From this we are able to analyze the total elastic strain. The kinematic scattering simulations shall be compared to experiments performed at a synchrotron nano-probe beamline with a spot size of about 100 nm in diameter. Such highly focused beams enable X-ray diffraction experiments on single nanowires and small ensembles.