Anomalous Hall effect from inter-superlattice scattering in a noncollinear antiferromagnet
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866916481539768320 |
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| author | Xie, Lilia S. Fender, Shannon S. Mollazadeh, Cameron Fang, Wuzhang Frontzek, Matthias D. Husremović, Samra Li, Kejun Craig, Isaac M. Goodge, Berit H. Erodici, Matthew P. Gonzalez, Oscar Denlinger, Jonathan P. Ping, Yuan Bediako, D. Kwabena |
| author_facet | Xie, Lilia S. Fender, Shannon S. Mollazadeh, Cameron Fang, Wuzhang Frontzek, Matthias D. Husremović, Samra Li, Kejun Craig, Isaac M. Goodge, Berit H. Erodici, Matthew P. Gonzalez, Oscar Denlinger, Jonathan P. Ping, Yuan Bediako, D. Kwabena |
| contents | Superlattice formation dictates the physical properties of many materials, including the nature of the ground state in magnetic materials. Chemical composition is commonly considered to be the primary determinant of superlattice identity, especially in intercalation compounds. Here, we find that, contrary to this conventional wisdom, kinetic control of superlattice growth leads to the coexistence of disparate domains within a compositionally "perfect" single crystal. We demonstrate that Cr$_{1/4}$TaS$_2$ is a bulk noncollinear antiferromagnet in which scattering between bulk and minority superlattice domains engenders complex magnetotransport below the Néel temperature, including an anomalous Hall effect. We characterize the magnetic phases in different domains, image their nanoscale morphology, and propose a mechanism for nucleation and growth. These results provide a blueprint for the deliberate engineering of macroscopic transport responses via microscopic patterning of magnetic exchange interactions in superlattice domains. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_08381 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anomalous Hall effect from inter-superlattice scattering in a noncollinear antiferromagnet Xie, Lilia S. Fender, Shannon S. Mollazadeh, Cameron Fang, Wuzhang Frontzek, Matthias D. Husremović, Samra Li, Kejun Craig, Isaac M. Goodge, Berit H. Erodici, Matthew P. Gonzalez, Oscar Denlinger, Jonathan P. Ping, Yuan Bediako, D. Kwabena Materials Science Superlattice formation dictates the physical properties of many materials, including the nature of the ground state in magnetic materials. Chemical composition is commonly considered to be the primary determinant of superlattice identity, especially in intercalation compounds. Here, we find that, contrary to this conventional wisdom, kinetic control of superlattice growth leads to the coexistence of disparate domains within a compositionally "perfect" single crystal. We demonstrate that Cr$_{1/4}$TaS$_2$ is a bulk noncollinear antiferromagnet in which scattering between bulk and minority superlattice domains engenders complex magnetotransport below the Néel temperature, including an anomalous Hall effect. We characterize the magnetic phases in different domains, image their nanoscale morphology, and propose a mechanism for nucleation and growth. These results provide a blueprint for the deliberate engineering of macroscopic transport responses via microscopic patterning of magnetic exchange interactions in superlattice domains. |
| title | Anomalous Hall effect from inter-superlattice scattering in a noncollinear antiferromagnet |
| topic | Materials Science |
| url | https://arxiv.org/abs/2411.08381 |