We report a magnetic imaging method using atomic force microscopy to measure a locally induced anomalous Nernst effect. A tip contact creates a local temperature gradient on a sample surface controlled by a neighboring Joule heating wire. We demonstrate imaging of magnetic domains in a nanowire of the ferromagnetic Weyl semimetal Co2MnGa with a spatial resolution of a sub-hundred nanometer at room temperature.
High-resolution magnetic imaging by mapping the locally induced anomalous Nernst effect using atomic force microscopy
Nico Budai, Hironari Isshiki, Ryota Uesugi, Zheng Zhu, Tomoya Higo, Satoru Nakatsuji, YoshiChika Otani; High-resolution magnetic imaging by mapping the locally induced anomalous Nernst effect using atomic force microscopy. Appl. Phys. Lett. 6 March 2023; 122 (10): 102401. https://doi.org/10.1063/5.0136613
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