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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2020
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2003.12768 |
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| _version_ | 1866911432256258048 |
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| author | Xu, Jia Chen, Haoran Zhou, Chao Shi, Dong Chen, Gong Wu, Yizheng |
| author_facet | Xu, Jia Chen, Haoran Zhou, Chao Shi, Dong Chen, Gong Wu, Yizheng |
| contents | Antiferromagnetic (AFM) domains in ultrathin CoO(001) films are imaged by a wide-field optical microscopy using magneto-optical birefringence effect. The magnetic origin of observed optical contrast is confirmed by the spin orientation manipulation through exchange coupling in Fe/CoO(001) bilayer. The finite size effect of ordering temperature for ultrathin single crystal CoO film is revealed by the thickness and temperature dependent measurement of birefringence contrast. The magneto-optical birefringence effect is found to strongly depend on the photon energy of incident light, and a surprising large polarization rotation angle up to 168.5 mdeg is obtained from a 4.6 nm CoO film with a blue light source, making it possible to further investigate the evolution of AFM domains in AFM ultrathin film under external field. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2003_12768 |
| institution | arXiv |
| publishDate | 2020 |
| record_format | arxiv |
| spellingShingle | Optical imaging of antiferromagnetic domains in ultrathin CoO(001) films Xu, Jia Chen, Haoran Zhou, Chao Shi, Dong Chen, Gong Wu, Yizheng Materials Science Antiferromagnetic (AFM) domains in ultrathin CoO(001) films are imaged by a wide-field optical microscopy using magneto-optical birefringence effect. The magnetic origin of observed optical contrast is confirmed by the spin orientation manipulation through exchange coupling in Fe/CoO(001) bilayer. The finite size effect of ordering temperature for ultrathin single crystal CoO film is revealed by the thickness and temperature dependent measurement of birefringence contrast. The magneto-optical birefringence effect is found to strongly depend on the photon energy of incident light, and a surprising large polarization rotation angle up to 168.5 mdeg is obtained from a 4.6 nm CoO film with a blue light source, making it possible to further investigate the evolution of AFM domains in AFM ultrathin film under external field. |
| title | Optical imaging of antiferromagnetic domains in ultrathin CoO(001) films |
| topic | Materials Science |
| url | https://arxiv.org/abs/2003.12768 |