Berlin 2012 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 91: [MA] Poster II

O 91.64: Poster

Freitag, 30. März 2012, 11:00–14:00, Poster A

Scanning laser setup for local heat gradients in ferromagnetic micro- and nanostructures — •Florian Brandl, Haiming Yu, Thomas Rapp, and Dirk Grundler — Lehrstuhl für Physik funktionaler Schichtsysteme, Technische Universität München, Physik Department, James-Franck-Straße 1, 85748 Garching b. München, Germany

We report on the development of a scanning laser setup that allows us to generate temperature gradients locally in ferromagnetic devices. With our system we position a focused laser beam on a sample with a translation stage offering nm resolution. A pair of crossed coils provides magnetic fields in the plane of the sample of up to 100 mT. The local heating will be tested using magnetoresistance measurements on ferromagnetic micro- and nanostructures. We also plan to combine the setup with ferromagnetic resonance measurements. We acknowledge financial support through the German priority program SPP 1538 "spin caloric transport" and the German excellence cluster "Nanosystems Initiative Munich".