Designed spin-texture-lattice to control anisotropic magnon transport in antiferromagnets
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913237211021312 |
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| author | Meisenheimer, Peter Ramesh, Maya Husain, Sajid Harris, Isaac Park, Hyeon Woo Zhou, Shiyu Taghinejad, Hossein Zhang, Hongrui Martin, Lane W. Analytis, James Stevenson, Paul Íñiguez-González, Jorge Kim, Se Kwon Schlom, Darrell G. Caretta, Lucas Yao, Zhi Ramesh, Ramamoorthy |
| author_facet | Meisenheimer, Peter Ramesh, Maya Husain, Sajid Harris, Isaac Park, Hyeon Woo Zhou, Shiyu Taghinejad, Hossein Zhang, Hongrui Martin, Lane W. Analytis, James Stevenson, Paul Íñiguez-González, Jorge Kim, Se Kwon Schlom, Darrell G. Caretta, Lucas Yao, Zhi Ramesh, Ramamoorthy |
| contents | Spin waves in magnetic materials are promising information carriers for future computing technologies due to their ultra-low energy dissipation and long coherence length. Antiferromagnets are strong candidate materials due, in part, to their stability to external fields and larger group velocities. Multiferroic aniferromagnets, such as BiFeO$_3$ (BFO), have an additional degree of freedom stemming from magnetoelectric coupling, allowing for control of the magnetic structure, and thus spin waves, with electric field. Unfortunately, spin-wave propagation in BFO is not well understood due to the complexity of the magnetic structure. In this work, we explore long-range spin transport within an epitaxially engineered, electrically tunable, one-dimensional (1D) magnonic crystal. We discover a striking anisotropy in the spin transport parallel and perpendicular to the 1D crystal axis. Multiscale theory and simulation suggests that this preferential magnon conduction emerges from a combination of a population imbalance in its dispersion, as well as anisotropic structural scattering. This work provides a pathway to electrically-reconfigurable magnonic crystals in antiferromagnets. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_12341 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Designed spin-texture-lattice to control anisotropic magnon transport in antiferromagnets Meisenheimer, Peter Ramesh, Maya Husain, Sajid Harris, Isaac Park, Hyeon Woo Zhou, Shiyu Taghinejad, Hossein Zhang, Hongrui Martin, Lane W. Analytis, James Stevenson, Paul Íñiguez-González, Jorge Kim, Se Kwon Schlom, Darrell G. Caretta, Lucas Yao, Zhi Ramesh, Ramamoorthy Materials Science Spin waves in magnetic materials are promising information carriers for future computing technologies due to their ultra-low energy dissipation and long coherence length. Antiferromagnets are strong candidate materials due, in part, to their stability to external fields and larger group velocities. Multiferroic aniferromagnets, such as BiFeO$_3$ (BFO), have an additional degree of freedom stemming from magnetoelectric coupling, allowing for control of the magnetic structure, and thus spin waves, with electric field. Unfortunately, spin-wave propagation in BFO is not well understood due to the complexity of the magnetic structure. In this work, we explore long-range spin transport within an epitaxially engineered, electrically tunable, one-dimensional (1D) magnonic crystal. We discover a striking anisotropy in the spin transport parallel and perpendicular to the 1D crystal axis. Multiscale theory and simulation suggests that this preferential magnon conduction emerges from a combination of a population imbalance in its dispersion, as well as anisotropic structural scattering. This work provides a pathway to electrically-reconfigurable magnonic crystals in antiferromagnets. |
| title | Designed spin-texture-lattice to control anisotropic magnon transport in antiferromagnets |
| topic | Materials Science |
| url | https://arxiv.org/abs/2402.12341 |