Regensburg 2016 – scientific programme
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O: Fachverband Oberflächenphysik
O 69: Nanostructures at Surfaces: Dots, Particles, Clusters
O 69.3: Poster
Wednesday, March 9, 2016, 18:15–20:30, Poster A
Growth of MnSb Islands on GaAs Substrates — •Christian Klump1, Carsten Godde1, Julian Ritzmann2, Arne Ludwig2, Andreas Wieck2, and Ulrich Köhler1 — 1Experimentalphysik IV, AG Oberflächen, Ruhr-Universität Bochum, Germany — 2Lehrstuhl für Angewandte Festkörperphysik, Ruhr-Universität Bochum, Germany
Stacking multiple layers of quantum dots is an established technique for the fabrication of many optic and optoelectronic devices. Up to now, the stacked layers consisted of semiconductor quantum dots exclusively. However, for future spintronic devices, the integration of semiconductor quantum dots with ferromagnetic materials is essential. For this approach, MnSb is an interesting material with its high Curie temperature of 587 K and its compatibility with semiconductor substrates. The pairing of MnSb islands with InAs QDs is studied. As a first step, MnSb islands were grown on different GaAs substrates by MBE. Structural and magnetic properties have been studied by STM, LEED and MOKE.