Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2
Here we report on the formation of a three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO_{2}, where the single-ion, uniaxial anisotropy inherent to the Mn^{3+} ions in this material provides a binding mechanism capable of stabilizing higher order magnon bound states. While...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/145025 |
| _version_ | 1826122508250644480 |
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| author | Dally, Rebecca L. Heng, Alvin J. R. Keselman, Anna Bordelon, Mitchell M. Stone, Matthew B. Balents, Leon Wilson, Stephen D. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Dally, Rebecca L. Heng, Alvin J. R. Keselman, Anna Bordelon, Mitchell M. Stone, Matthew B. Balents, Leon Wilson, Stephen D. |
| author_sort | Dally, Rebecca L. |
| collection | NTU |
| description | Here we report on the formation of a three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO_{2}, where the single-ion, uniaxial anisotropy inherent to the Mn^{3+} ions in this material provides a binding mechanism capable of stabilizing higher order magnon bound states. While such states have long remained elusive in studies of antiferromagnetic chains, neutron scattering data presented here demonstrate that higher order n>2 composite magnons exist, and, specifically, that a weak three-magnon bound state is detected below the antiferromagnetic ordering transition of NaMnO_{2}. We corroborate our findings with exact numerical simulations of a one-dimensional Heisenberg chain with easy-axis anisotropy using matrix-product state techniques, finding a good quantitative agreement with the experiment. These results establish α-NaMnO_{2} as a unique platform for exploring the dynamics of composite magnon states inherent to a classical antiferromagnetic spin chain with Ising-like single ion anisotropy. |
| first_indexed | 2024-10-01T05:49:39Z |
| format | Journal Article |
| id | ntu-10356/145025 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:49:39Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1450252023-02-28T19:54:19Z Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2 Dally, Rebecca L. Heng, Alvin J. R. Keselman, Anna Bordelon, Mitchell M. Stone, Matthew B. Balents, Leon Wilson, Stephen D. School of Physical and Mathematical Sciences Physics - Strongly Correlated Electrons Physics - Strongly Correlated Electrons Science::Physics Antiferromagnet Bound State Here we report on the formation of a three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO_{2}, where the single-ion, uniaxial anisotropy inherent to the Mn^{3+} ions in this material provides a binding mechanism capable of stabilizing higher order magnon bound states. While such states have long remained elusive in studies of antiferromagnetic chains, neutron scattering data presented here demonstrate that higher order n>2 composite magnons exist, and, specifically, that a weak three-magnon bound state is detected below the antiferromagnetic ordering transition of NaMnO_{2}. We corroborate our findings with exact numerical simulations of a one-dimensional Heisenberg chain with easy-axis anisotropy using matrix-product state techniques, finding a good quantitative agreement with the experiment. These results establish α-NaMnO_{2} as a unique platform for exploring the dynamics of composite magnon states inherent to a classical antiferromagnetic spin chain with Ising-like single ion anisotropy. Published version 2020-12-08T09:22:10Z 2020-12-08T09:22:10Z 2020 Journal Article Dally, R. L., Heng, A. J. R., Keselman, A., Bordelon, M. M., Stone, M. B., Balents, L., & Wilson, S. D. (2020). Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2. Physical Review Letters, 124(19), 197203-. doi:10.1103/PhysRevLett.124.197203 0031-9007 https://hdl.handle.net/10356/145025 10.1103/PhysRevLett.124.197203 32469556 19 124 en Physical Review Letters © 2020 American Physical Society. All rights reserved. This paper was published in Physical Review Letters and is made available with permission of American Physical Society. application/pdf |
| spellingShingle | Physics - Strongly Correlated Electrons Physics - Strongly Correlated Electrons Science::Physics Antiferromagnet Bound State Dally, Rebecca L. Heng, Alvin J. R. Keselman, Anna Bordelon, Mitchell M. Stone, Matthew B. Balents, Leon Wilson, Stephen D. Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2 |
| title | Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2 |
| title_full | Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2 |
| title_fullStr | Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2 |
| title_full_unstemmed | Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2 |
| title_short | Three-magnon bound state in the quasi-one-dimensional antiferromagnet α-NaMnO2 |
| title_sort | three magnon bound state in the quasi one dimensional antiferromagnet α namno2 |
| topic | Physics - Strongly Correlated Electrons Physics - Strongly Correlated Electrons Science::Physics Antiferromagnet Bound State |
| url | https://hdl.handle.net/10356/145025 |
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