High-resolution magnetic imaging by mapping the locally induced anomalous Nernst effect using atomic force microscopy

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.

References in corpus (1)

• Direct Mapping of Local Seebeck Coefficient in 2D Material Nanostructures via Scanning Thermal Gate Microscopy

Cited by in corpus (2)

• Observation of cluster magnetic octupole domains in the antiferromagnetic Weyl semimetal Mn3Sn nanowire
• Quantum Heat Under the Microscope: A Perspective on Cryogenic Scanning Thermal Microscopy