Configurable antiferromagnetic domains and lateral exchange bias in atomically thin CrPS4
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , , , , , , , , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2025
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866918230414589952 |
|---|---|
| author | Wang, Yu-Xuan Graham, Thomas K. M. Rama-Eiroa, Ricardo Islam, Md Ariful Badarneh, Mohammad H. Gontijo, Rafael Nunes Tiwari, Ganesh Prasad Adhikari, Tibendra Zhang, Xin-Yue Watanabe, Kenji Taniguchi, Takashi Besson, Claire Santos, Elton J. G. Lin, Zhong Zhou, Brian B. |
| author_facet | Wang, Yu-Xuan Graham, Thomas K. M. Rama-Eiroa, Ricardo Islam, Md Ariful Badarneh, Mohammad H. Gontijo, Rafael Nunes Tiwari, Ganesh Prasad Adhikari, Tibendra Zhang, Xin-Yue Watanabe, Kenji Taniguchi, Takashi Besson, Claire Santos, Elton J. G. Lin, Zhong Zhou, Brian B. |
| contents | Interfacial exchange coupling between antiferromagnets (AFMs) and ferromagnets (FMs) crucially makes it possible to shift the FM hysteresis, known as exchange bias, and to switch AFM states. Two-dimensional magnets unlock opportunities to combine AFM and FM materials; however, the buried AFM-FM interfaces obtained by stacking remains challenging to understand. Here we demonstrate interfacial control via intralayer exchange coupling in the layered AFM CrPS$_4$, where connected even and odd layers realize pristine lateral interfaces between AFM-like and FM-like regions. We distinguish antiphase even-layer states by scanning nitrogen-vacancy centre (NV) magnetometry due to a weak surface magnetization. This surface magnetization enables control over the even-layer state, with different regions switching at distinct fields due to their own lateral couplings. We toggle three AFM domains adjacent to a FM-like region and demonstrate a tunable multilevel exchange bias. Our nanoscale visualization unveils the microscopic origins of exchange bias and advances single two-dimensional crystals for hybrid AFM-FM technologies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_04055 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Configurable antiferromagnetic domains and lateral exchange bias in atomically thin CrPS4 Wang, Yu-Xuan Graham, Thomas K. M. Rama-Eiroa, Ricardo Islam, Md Ariful Badarneh, Mohammad H. Gontijo, Rafael Nunes Tiwari, Ganesh Prasad Adhikari, Tibendra Zhang, Xin-Yue Watanabe, Kenji Taniguchi, Takashi Besson, Claire Santos, Elton J. G. Lin, Zhong Zhou, Brian B. Mesoscale and Nanoscale Physics Interfacial exchange coupling between antiferromagnets (AFMs) and ferromagnets (FMs) crucially makes it possible to shift the FM hysteresis, known as exchange bias, and to switch AFM states. Two-dimensional magnets unlock opportunities to combine AFM and FM materials; however, the buried AFM-FM interfaces obtained by stacking remains challenging to understand. Here we demonstrate interfacial control via intralayer exchange coupling in the layered AFM CrPS$_4$, where connected even and odd layers realize pristine lateral interfaces between AFM-like and FM-like regions. We distinguish antiphase even-layer states by scanning nitrogen-vacancy centre (NV) magnetometry due to a weak surface magnetization. This surface magnetization enables control over the even-layer state, with different regions switching at distinct fields due to their own lateral couplings. We toggle three AFM domains adjacent to a FM-like region and demonstrate a tunable multilevel exchange bias. Our nanoscale visualization unveils the microscopic origins of exchange bias and advances single two-dimensional crystals for hybrid AFM-FM technologies. |
| title | Configurable antiferromagnetic domains and lateral exchange bias in atomically thin CrPS4 |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2512.04055 |