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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.22463 |
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| _version_ | 1866909370892156928 |
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| author | Ojha, Shashank Kumar Pal, Pratap Prokhorenko, Sergei Husain, Sajid Ramesh, Maya Meisenheimer, Peter Schlom, Darrell G. Stevenson, Paul Caretta, Lucas Nahas, Yousra Martin, Lane W. Bellaiche, Laurent Eom, Chang-Beom Ramesh, Ramamoorthy |
| author_facet | Ojha, Shashank Kumar Pal, Pratap Prokhorenko, Sergei Husain, Sajid Ramesh, Maya Meisenheimer, Peter Schlom, Darrell G. Stevenson, Paul Caretta, Lucas Nahas, Yousra Martin, Lane W. Bellaiche, Laurent Eom, Chang-Beom Ramesh, Ramamoorthy |
| contents | Pattern formation in spin systems with continuous-rotational symmetry (CRS) provides a powerful platform to study emergent complex magnetic phases and topological defects in condensed-matter physics. However, its understanding and correlation with unconventional magnetic order along with high-resolution nanoscale imaging is challenging. Here, we employ scanning NV magnetometry to unveil the morphogenesis of spin cycloids at both the local and global scales within a single ferroelectric domain of (111)-oriented BiFeO$_3$ (which is a non-collinear antiferromagnet), resulting in formation of a glassy labyrinthine pattern. We find that the domains of locally oriented cycloids are interconnected by an array of topological defects and exhibit isotropic energy landscape predicted by first-principles calculations. We propose that the CRS of spin-cycloid propagation directions within the (111) drives the formation of the labyrinthine pattern and the associated topological defects such as antiferromagnetic skyrmions. Unexpectedly, reversing the as-grown ferroelectric polarization from [$\bar{1}$$\bar{1}$$\bar{1}$] to [111] induces a magnetic phase transition, destroying the labyrinthine pattern and producing a deterministic non-volatile non cycloidal, uniformly magnetized state. These findings highlight that (111)-oriented BiFeO$_3$ is not only important for studying the fascinating subject of pattern formation but could also be utilized as an ideal platform for integrating novel topological defects in the field of antiferromagnetic spintronics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_22463 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Morphogenesis of Spin Cycloids in a Non-collinear Antiferromagnet Ojha, Shashank Kumar Pal, Pratap Prokhorenko, Sergei Husain, Sajid Ramesh, Maya Meisenheimer, Peter Schlom, Darrell G. Stevenson, Paul Caretta, Lucas Nahas, Yousra Martin, Lane W. Bellaiche, Laurent Eom, Chang-Beom Ramesh, Ramamoorthy Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons Pattern formation in spin systems with continuous-rotational symmetry (CRS) provides a powerful platform to study emergent complex magnetic phases and topological defects in condensed-matter physics. However, its understanding and correlation with unconventional magnetic order along with high-resolution nanoscale imaging is challenging. Here, we employ scanning NV magnetometry to unveil the morphogenesis of spin cycloids at both the local and global scales within a single ferroelectric domain of (111)-oriented BiFeO$_3$ (which is a non-collinear antiferromagnet), resulting in formation of a glassy labyrinthine pattern. We find that the domains of locally oriented cycloids are interconnected by an array of topological defects and exhibit isotropic energy landscape predicted by first-principles calculations. We propose that the CRS of spin-cycloid propagation directions within the (111) drives the formation of the labyrinthine pattern and the associated topological defects such as antiferromagnetic skyrmions. Unexpectedly, reversing the as-grown ferroelectric polarization from [$\bar{1}$$\bar{1}$$\bar{1}$] to [111] induces a magnetic phase transition, destroying the labyrinthine pattern and producing a deterministic non-volatile non cycloidal, uniformly magnetized state. These findings highlight that (111)-oriented BiFeO$_3$ is not only important for studying the fascinating subject of pattern formation but could also be utilized as an ideal platform for integrating novel topological defects in the field of antiferromagnetic spintronics. |
| title | Morphogenesis of Spin Cycloids in a Non-collinear Antiferromagnet |
| topic | Materials Science Mesoscale and Nanoscale Physics Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2410.22463 |