Imaging strain-controlled magnetic reversal in thin CrSBr
Fuente:
arXiv
Enregistré dans:
| Auteurs principaux: | , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2024
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866914965148925952 |
|---|---|
| author | Bagani, Kousik Vervelaki, Andriani Jetter, Daniel Devarakonda, Aravind Tschudin, Märta A. Gross, Boris Chica, Daniel G. Broadway, David A. Dean, Cory R. Roy, Xavier Maletinsky, Patrick Poggio, Martino |
| author_facet | Bagani, Kousik Vervelaki, Andriani Jetter, Daniel Devarakonda, Aravind Tschudin, Märta A. Gross, Boris Chica, Daniel G. Broadway, David A. Dean, Cory R. Roy, Xavier Maletinsky, Patrick Poggio, Martino |
| contents | Two-dimensional materials are extraordinarily sensitive to external stimuli, making them ideal for studying fundamental properties and for engineering devices with new functionalities. One such stimulus, strain, affects the magnetic properties of the layered magnetic semiconductor CrSBr to such a degree that it can induce a reversible antiferromagnetic-to-ferromagnetic phase transition. Given the pervasiveness of non-uniform strain in exfoliated two-dimensional magnets, it is crucial to understand its impact on their magnetic behavior. Using scanning SQUID-on-lever microscopy, we directly image the effects of spatially inhomogeneous strain on the magnetization of layered CrSBr as it is polarized by a field applied along its easy axis. The evolution of this magnetization and the formation of domains is reproduced by a micromagnetic model, which incorporates the spatially varying strain and the corresponding changes in the local interlayer exchange stiffness. The observed sensitivity to small strain gradients along with similar images of a nominally unstrained CrSBr sample suggest that unintentional strain inhomogeneity influences the magnetic behavior of exfoliated samples and must be considered in the design of future devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_07657 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Imaging strain-controlled magnetic reversal in thin CrSBr Bagani, Kousik Vervelaki, Andriani Jetter, Daniel Devarakonda, Aravind Tschudin, Märta A. Gross, Boris Chica, Daniel G. Broadway, David A. Dean, Cory R. Roy, Xavier Maletinsky, Patrick Poggio, Martino Mesoscale and Nanoscale Physics Materials Science Two-dimensional materials are extraordinarily sensitive to external stimuli, making them ideal for studying fundamental properties and for engineering devices with new functionalities. One such stimulus, strain, affects the magnetic properties of the layered magnetic semiconductor CrSBr to such a degree that it can induce a reversible antiferromagnetic-to-ferromagnetic phase transition. Given the pervasiveness of non-uniform strain in exfoliated two-dimensional magnets, it is crucial to understand its impact on their magnetic behavior. Using scanning SQUID-on-lever microscopy, we directly image the effects of spatially inhomogeneous strain on the magnetization of layered CrSBr as it is polarized by a field applied along its easy axis. The evolution of this magnetization and the formation of domains is reproduced by a micromagnetic model, which incorporates the spatially varying strain and the corresponding changes in the local interlayer exchange stiffness. The observed sensitivity to small strain gradients along with similar images of a nominally unstrained CrSBr sample suggest that unintentional strain inhomogeneity influences the magnetic behavior of exfoliated samples and must be considered in the design of future devices. |
| title | Imaging strain-controlled magnetic reversal in thin CrSBr |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2408.07657 |