Correlating on-the-fly Electrical and Optical Skyrmion Readout
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914176751894528 |
|---|---|
| author | Beneke, Grischa Leutner, Kilian Vijayan, Nikhil Kammerbauer, Fabian Tran, Duc Minh Krishnia, Sachin Güttinger, Johannes Satz, Armin Frömter, Robert Kläui, Mathias |
| author_facet | Beneke, Grischa Leutner, Kilian Vijayan, Nikhil Kammerbauer, Fabian Tran, Duc Minh Krishnia, Sachin Güttinger, Johannes Satz, Armin Frömter, Robert Kläui, Mathias |
| contents | Magnetic skyrmions, topologically stabilized spin textures, are promising candidates for future memory devices and non-conventional computing applications due to their enhanced stability, non-linear interactions, and low-power manipulation capabilities. Despite their significant potential, the reliable electrical readout of individual skyrmions remains a fundamental challenge. While magnetic tunnel junctions and anomalous Hall effect (AHE)-based techniques have demonstrated skyrmion detection capabilities, they currently fail to reliably detect single moving skyrmions as required for applications. Our approach leverages thermally activated skyrmions, where a low constant drive current simultaneously generates both skyrmion motion and the Hall voltage necessary for detection. We demonstrate the reliability of this method through real-time correlation between measured Hall voltage signals and direct Kerr microscopy imaging. Two consecutive Hall crosses allow for determining the skyrmion velocity, in accordance to Kerr microscopy videos. We present an analytical formula for the skyrmion AHE readout signal, demonstrating scalability from micrometer to nanometer skyrmions. These advances establish a robust platform for skyrmion-based sensors, counters and unconventional computing systems that depend on precise individual skyrmion control and detection. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_15519 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Correlating on-the-fly Electrical and Optical Skyrmion Readout Beneke, Grischa Leutner, Kilian Vijayan, Nikhil Kammerbauer, Fabian Tran, Duc Minh Krishnia, Sachin Güttinger, Johannes Satz, Armin Frömter, Robert Kläui, Mathias Mesoscale and Nanoscale Physics Applied Physics Magnetic skyrmions, topologically stabilized spin textures, are promising candidates for future memory devices and non-conventional computing applications due to their enhanced stability, non-linear interactions, and low-power manipulation capabilities. Despite their significant potential, the reliable electrical readout of individual skyrmions remains a fundamental challenge. While magnetic tunnel junctions and anomalous Hall effect (AHE)-based techniques have demonstrated skyrmion detection capabilities, they currently fail to reliably detect single moving skyrmions as required for applications. Our approach leverages thermally activated skyrmions, where a low constant drive current simultaneously generates both skyrmion motion and the Hall voltage necessary for detection. We demonstrate the reliability of this method through real-time correlation between measured Hall voltage signals and direct Kerr microscopy imaging. Two consecutive Hall crosses allow for determining the skyrmion velocity, in accordance to Kerr microscopy videos. We present an analytical formula for the skyrmion AHE readout signal, demonstrating scalability from micrometer to nanometer skyrmions. These advances establish a robust platform for skyrmion-based sensors, counters and unconventional computing systems that depend on precise individual skyrmion control and detection. |
| title | Correlating on-the-fly Electrical and Optical Skyrmion Readout |
| topic | Mesoscale and Nanoscale Physics Applied Physics |
| url | https://arxiv.org/abs/2508.15519 |