Dresden 2020 – scientific programme
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MA: Fachverband Magnetismus
MA 14: General Spintronics
MA 14.10: Talk
Monday, March 16, 2020, 17:30–17:45, HSZ 401
Transport characterization of individual hemispherical shells by zero-offset Hall magnetometry — •Eduardo Sergio Oliveros Mata1, Tobias Kosub1, Oleksii M. Volkov1, Oleksandr Pylypovskyi1,2, Jürgen Faßbender1, and Denys Makarov1 — 1Helmholtz-Zentrum Dresden-Rossendorf e.V., Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany — 2Taras Shevchenko National University of Kyiv, 01601 Kyiv, Ukraine
Magnetic thin films exhibit novel anisotropic and chiral effects driven by local curvatures. In this context, various curvilinear effects have been studied in theoretical and experimental works [1]. Typically, magnetic properties are assessed based on integral measurements or relying on advanced microscopy characterization. Spintronic studies of individual curvilinear magnetic nanoobjects are missing, primarily due to the low adaptability of standard lithographic processes to integrate with 3D submicron objects. Here, we apply zero-offset Hall magnetometry [2] to carry out electron transport measurements of curvilinear nanostructures. We test the viability of the technique by comparing the transport characteristics between flat nanodisks and individual hemispherical nanoshells in magnetic vortex and hedgehog states. This approach is relevant to perform both fundamental characterization of curved magnetic architectures and direct integration of these structures in magnetic sensorics.
[1] R. Streubel, et al., J. Phys. D: Appl. Phys. 49, 363001 (2016) [2] T. Kosub, et al., PRL 115, 097201 (2015)