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arXiv · 2508.03066

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
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Abstract

We report a magnetic imaging method using atomic force microscopy to measure the locally induced anomalous Nernst effect. The tip contact creates a local temperature gradient on the sample surface controlled by a neighboring Joule heating wire. We demonstrate the 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.

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Nico Budai, Hironari Isshiki, Ryota Uesugi, Zheng Zhu, Tomoya Higo, Satoru Nakatsuji, YoshiChika Otani. 2025-08-05. High-resolution magnetic imaging by mapping the locally induced anomalous Nernst effect using atomic force microscopy. https://doi.org/10.1063/5.0136613

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