Time-dependent Schwinger boson mean-field theory of supermagnonic propagation in 2D antiferromagnets
Understanding the speed limits for the propagation of magnons is of key importance for the development of ultrafast spintronics and magnonics. Recently, it was predicted that in 2D antiferromagnets, spin correlations can propagate faster than the highest magnon velocity. Here we gain deeper understa...
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| Format: | Article |
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2024-12-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.17.6.159 |
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| author | Martijn D. Bouman, Johan H. Mentink |
| author_facet | Martijn D. Bouman, Johan H. Mentink |
| author_sort | Martijn D. Bouman, Johan H. Mentink |
| collection | DOAJ |
| description | Understanding the speed limits for the propagation of magnons is of key importance for the development of ultrafast spintronics and magnonics. Recently, it was predicted that in 2D antiferromagnets, spin correlations can propagate faster than the highest magnon velocity. Here we gain deeper understanding of this supermagnonic effect based on time-dependent Schwinger boson mean-field theory. We find that the supermagnonic effect is determined by the competition between propagating magnons and a localized quasi-bound state, which is tunable by lattice coordination and quantum spin value $S$, suggesting a new scenario to enhance magnon propagation. |
| format | Article |
| id | doaj-art-efceac911c574d279d2d9b37bcf476a6 |
| institution | OA Journals |
| issn | 2542-4653 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics |
| spelling | doaj-art-efceac911c574d279d2d9b37bcf476a62025-08-20T01:55:12ZengSciPostSciPost Physics2542-46532024-12-0117615910.21468/SciPostPhys.17.6.159Time-dependent Schwinger boson mean-field theory of supermagnonic propagation in 2D antiferromagnetsMartijn D. Bouman, Johan H. MentinkUnderstanding the speed limits for the propagation of magnons is of key importance for the development of ultrafast spintronics and magnonics. Recently, it was predicted that in 2D antiferromagnets, spin correlations can propagate faster than the highest magnon velocity. Here we gain deeper understanding of this supermagnonic effect based on time-dependent Schwinger boson mean-field theory. We find that the supermagnonic effect is determined by the competition between propagating magnons and a localized quasi-bound state, which is tunable by lattice coordination and quantum spin value $S$, suggesting a new scenario to enhance magnon propagation.https://scipost.org/SciPostPhys.17.6.159 |
| spellingShingle | Martijn D. Bouman, Johan H. Mentink Time-dependent Schwinger boson mean-field theory of supermagnonic propagation in 2D antiferromagnets SciPost Physics |
| title | Time-dependent Schwinger boson mean-field theory of supermagnonic propagation in 2D antiferromagnets |
| title_full | Time-dependent Schwinger boson mean-field theory of supermagnonic propagation in 2D antiferromagnets |
| title_fullStr | Time-dependent Schwinger boson mean-field theory of supermagnonic propagation in 2D antiferromagnets |
| title_full_unstemmed | Time-dependent Schwinger boson mean-field theory of supermagnonic propagation in 2D antiferromagnets |
| title_short | Time-dependent Schwinger boson mean-field theory of supermagnonic propagation in 2D antiferromagnets |
| title_sort | time dependent schwinger boson mean field theory of supermagnonic propagation in 2d antiferromagnets |
| url | https://scipost.org/SciPostPhys.17.6.159 |
| work_keys_str_mv | AT martijndboumanjohanhmentink timedependentschwingerbosonmeanfieldtheoryofsupermagnonicpropagationin2dantiferromagnets |