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Imaging and writing magnetic domains in the non-collinear antiferromagnet Mn3Sn

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Markou,  Anastasios
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Kriegner,  Dominik
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Felser,  Claudia
Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Reichlova, H., Janda, T., Godinho, J., Markou, A., Kriegner, D., Schlitz, R., et al. (2019). Imaging and writing magnetic domains in the non-collinear antiferromagnet Mn3Sn. Nature Communications, 10: 5459, pp. 1-6. doi:10.1038/s41467-019-13391-z.


Cite as: https://hdl.handle.net/21.11116/0000-0005-569A-D
Abstract
Non-collinear antiferromagnets are revealing many unexpected phenomena and they became crucial for the field of antiferromagnetic spintronics. To visualize and prepare a well-defined domain structure is of key importance. The spatial magnetic contrast, however, remains extraordinarily difficult to be observed experimentally. Here, we demonstrate a magnetic imaging technique based on a laser induced local thermal gradient combined with detection of the anomalous Nernst effect. We employ this method in one the most actively studied representatives of this class of materials-Mn3Sn. We demonstrate that the observed contrast is of magnetic origin. We further show an algorithm to prepare a well-defined domain pattern at room temperature based on heat assisted recording principle. Our study opens up a prospect to study spintronics phenomena in non-collinear antiferromagnets with spatial resolution.