Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2602.23494 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866918359096885248 |
|---|---|
| author | Samanta, Tamalika LaDuca, Zachary T. Chen, An-Hsi Kim, Sangsoo Chan, Ying-Ting Wu, Jiaxuan Teng, Yujia Mallick, Debarghya Brahlek, Matthew Ward, T. Zac Su, Katherine Hu, Jia-Mian Wu, Weida Birol, Turan Yan, Hanfei Arnold, Michael S. Rabe, Karin M. Kawasaki, Jason K. |
| author_facet | Samanta, Tamalika LaDuca, Zachary T. Chen, An-Hsi Kim, Sangsoo Chan, Ying-Ting Wu, Jiaxuan Teng, Yujia Mallick, Debarghya Brahlek, Matthew Ward, T. Zac Su, Katherine Hu, Jia-Mian Wu, Weida Birol, Turan Yan, Hanfei Arnold, Michael S. Rabe, Karin M. Kawasaki, Jason K. |
| contents | Flexomagnetism, the coupling of magnetic ordering to strain gradients, provides access to novel symmetry-broken magnetic phases that cannot be accessed via uniform strain. However, flexomagnetism is hard to understand because it is extremely difficult to control a spatially varying strain. Here, we develop a top-down strategy to pattern transverse strain gradients using helium ion implantation through a lithographically defined mask. Using epitaxial films of the antiferromagnetic nodal line semimetal GdAuGe, we demonstrate that transverse strain gradients $\partial \varepsilon_{zz}/\partial x$ induce near-room-temperature ferromagnetic response, compared to the retained para or antiferromagnetism for homogeneously strained GdAuGe. We spatially correlate the magnetic response with the regions of largest strain gradient, via magnetic force microscopy and nanobeam x-ray diffraction, respectively, to confirm the flexomagnetic response. Our approach opens new avenues for the precise control of magnetic phases in thin films of quantum materials via a patterned strain gradient. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_23494 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Strain patterning of flexomagnetism Samanta, Tamalika LaDuca, Zachary T. Chen, An-Hsi Kim, Sangsoo Chan, Ying-Ting Wu, Jiaxuan Teng, Yujia Mallick, Debarghya Brahlek, Matthew Ward, T. Zac Su, Katherine Hu, Jia-Mian Wu, Weida Birol, Turan Yan, Hanfei Arnold, Michael S. Rabe, Karin M. Kawasaki, Jason K. Materials Science Flexomagnetism, the coupling of magnetic ordering to strain gradients, provides access to novel symmetry-broken magnetic phases that cannot be accessed via uniform strain. However, flexomagnetism is hard to understand because it is extremely difficult to control a spatially varying strain. Here, we develop a top-down strategy to pattern transverse strain gradients using helium ion implantation through a lithographically defined mask. Using epitaxial films of the antiferromagnetic nodal line semimetal GdAuGe, we demonstrate that transverse strain gradients $\partial \varepsilon_{zz}/\partial x$ induce near-room-temperature ferromagnetic response, compared to the retained para or antiferromagnetism for homogeneously strained GdAuGe. We spatially correlate the magnetic response with the regions of largest strain gradient, via magnetic force microscopy and nanobeam x-ray diffraction, respectively, to confirm the flexomagnetic response. Our approach opens new avenues for the precise control of magnetic phases in thin films of quantum materials via a patterned strain gradient. |
| title | Strain patterning of flexomagnetism |
| topic | Materials Science |
| url | https://arxiv.org/abs/2602.23494 |