Journal article

Fabrication and local laser heating of freestanding Ni80Fe20 bridges with Pt contacts displaying anisotropic magnetoresistance and anomalous Nernst effect

In spin caloritronics, ferromagnetic samples subject to relatively large in-plane temperature gradients T have turned out to be extremely interesting. We report on a preparation technique that allows us to create freely suspended permalloy/Pt hybrid structures where a scanning laser induces T on the order of a few K/μm. We observe both the anisotropic magnetoresistance at room temperature and the magnetic field dependent anomalous Nernst effect under laser heating. The technique is promising for the realization of device concepts considered in spin caloritronics based on suspended ferromagnetic nanostructures with electrical contacts. © 2014 AIP Publishing LLC.


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