Contact solitons as spin pistons in one-dimensional ferromagnetic channels
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arXiv
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| Hauptverfasser: | , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866909458160943104 |
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| author | Estiphanos, Medhanie Iacocca, Ezio |
| author_facet | Estiphanos, Medhanie Iacocca, Ezio |
| contents | Ferromagnetic channels subject to spin injection have been theoretically shown to sustain dissipative exchange flows (DEFs). In the strong injection regime, a soliton is stabilized at the injection site, which has been termed a contact soliton DEF or CS-DEF. Here, we investigate the modulation of CS-DEFs as a mechanism to inject magnons into a DEF. By varying the injection current, the parameters connecting the soliton with the DEF via a boundary layer are varied. These lead to a modification in the DEF which is interpreted as a spin piston. The injected magnons follow the expected dispersion relation of DEFs, akin to the Bogoliubov - de Gennes dispersion relation. This work demonstrates that changes in the injected current can pumping magnons along a ferromagnetic channel via dissipative exchange flows. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_02628 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Contact solitons as spin pistons in one-dimensional ferromagnetic channels Estiphanos, Medhanie Iacocca, Ezio Mesoscale and Nanoscale Physics Ferromagnetic channels subject to spin injection have been theoretically shown to sustain dissipative exchange flows (DEFs). In the strong injection regime, a soliton is stabilized at the injection site, which has been termed a contact soliton DEF or CS-DEF. Here, we investigate the modulation of CS-DEFs as a mechanism to inject magnons into a DEF. By varying the injection current, the parameters connecting the soliton with the DEF via a boundary layer are varied. These lead to a modification in the DEF which is interpreted as a spin piston. The injected magnons follow the expected dispersion relation of DEFs, akin to the Bogoliubov - de Gennes dispersion relation. This work demonstrates that changes in the injected current can pumping magnons along a ferromagnetic channel via dissipative exchange flows. |
| title | Contact solitons as spin pistons in one-dimensional ferromagnetic channels |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2407.02628 |