Designed Spin‐Texture‐Lattice to Control Anisotropic Magnon Transport in Antiferromagnets
[1];
[13]
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA
- Department of Materials Science and Engineering Cornell University Ithaca NY 14853 USA
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA, Materials Science Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Department of Physics University of California Berkeley CA 94720 USA
- Department of Physics Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 South Korea
- Department of Physics Brown University Providence RI 02912 USA
- Departments of Physics and Astronomy and Materials Science and NanoEngineering and Rice Advanced Materials Institute Rice University Houston TX 77005 USA, Department of Chemistry Rice University Houston TX 77005 USA
- Department of Physics Northeastern University Boston MA 02115 USA
- Materials Research and Technology Department Luxembourg Institute of Science and Technology (LIST) Esch‐sur‐Alzette Luxembourg, Department of Physics and Materials Science University of Luxembourg Esch‐sur‐Alzette Belvaux 1511 Luxembourg
- Department of Materials Science and Engineering Cornell University Ithaca NY 14853 USA, Kavli Institute for Nanoscale Science Cornell University Ithaca NY 14853 USA, Leibniz‐Institut für Kristallzüchtung 12489 Berlin Germany
- School of Engineering Brown University Providence RI 02912 USA
- Applied Mathematics and Computational Research Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Department of Materials Science and Engineering University of California Berkeley CA 94720 USA, Materials Science Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA, Department of Physics University of California Berkeley CA 94720 USA, Departments of Physics and Astronomy and Materials Science and NanoEngineering and Rice Advanced Materials Institute Rice University Houston TX 77005 USA
Abstract 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 antiferromagnets, 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 the electric field. Unfortunately, spin‐wave propagation in BFO is not well understood due to the complexity of the magnetic structure. In this work, long‐range spin transport is explored within an epitaxially engineered, electrically tunable, 1D magnonic crystal. A striking anisotropy is discovered in the spin transport parallel and perpendicular to the 1D crystal axis. Multiscale theory and simulation suggest 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.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Luxembourg National Research Fund (FNR); National Research Foundation of Korea (NRF); US Army Research Office (ARO); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 2404450
- Journal Information:
- Advanced Materials, Journal Name: Advanced Materials; ISSN 0935-9648
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English
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