Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 81: Correlated Electrons: Chiral Magnets

TT 81.2: Vortrag

Freitag, 24. März 2017, 09:45–10:00, HSZ 304

Nanostructured MnSi - physical and electronic characterization — •David Schroeter¹, Nico Steinki¹, Alexander Fernández Scarioni², Hans Werner Schumacher², Stefan Süllow¹, and Dirk Menzel¹ — ¹Technische Universität Braunschweig, Institut für Physik der Kondensierten Materie, D-38106 Braunschweig, Germany — ²Physikalisch Technische Bundesanstalt, D-38116 Braunschweig, Germany

Manganese silicide (MnSi), which crystallizes in the non-centrosymmetric cubic B20 structure, shows intriguing magnetic properties involving the existence of skyrmions in the magnetic phase diagram. Since MnSi as bulk crystal has been intensively investigated using a multitude of different experimental techniques, the magnetic and transport properties are well understood. In contrast, measurements of the electronic transport in MnSi thin films reported in literature show irregular and sample dependent results.

In this situation, we have set out to reinvestigate the (magneto)resistivity and Hall effect in MnSi thin films. We have carefully performed Hall and resistivity experiments on nanostructured MnSi thin films and have analyzed the electronic transport properties in Hall geometries of various size to determine the intrinsic behavior. We compare bulk, thin film and nanostructure data and discuss our results in consideration of the structural and morphologic characterization of the samples.