Spin pumping through nanocrystalline yopological insulators
The topological surface states (TSSs) in topological insulators (TIs) offer exciting prospects for dissipationless spin transport. Common spin-based devices, such as spin valves, rely on trilayer structures in which a non-magnetic (NM) layer is sandwiched between two ferromagnetic (FM) layers. The m...
| Päätekijät: | , , , , , , , , |
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| Aineistotyyppi: | Journal article |
| Kieli: | English |
| Julkaistu: |
IOP Publishing
2023
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| _version_ | 1826310239749668864 |
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| author | Burn, DM Lin, J-C Fujita, R Achinuq, B Bibby, J Singh, A Frisk, A van der Laan, G Hesjedal, T |
| author_facet | Burn, DM Lin, J-C Fujita, R Achinuq, B Bibby, J Singh, A Frisk, A van der Laan, G Hesjedal, T |
| author_sort | Burn, DM |
| collection | OXFORD |
| description | The topological surface states (TSSs) in topological insulators (TIs) offer exciting prospects for dissipationless spin transport. Common spin-based devices, such as spin valves, rely on trilayer structures in which a non-magnetic (NM) layer is sandwiched between two ferromagnetic (FM) layers. The major disadvantage of using high-quality single-crystalline TI films in this context is that a single pair of spin-momentum locked channels spans across the entire film, meaning that only a very small spin current can be pumped from one FM to the other, along the side walls of the film. On the other hand, using nanocrystalline TI films, in which the grains are large enough to avoid hybridization of the TSSs, will effectively increase the number of spin channels available for spin pumping. Here, we used an element-selective, x-ray based ferromagnetic resonance technique to demonstrate spin pumping from a FM layer at resonance through the TI layer and into the FM spin sink. |
| first_indexed | 2024-03-07T07:49:01Z |
| format | Journal article |
| id | oxford-uuid:ca109984-ee01-4ef1-92b2-0fc3d6a7af94 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:49:01Z |
| publishDate | 2023 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | oxford-uuid:ca109984-ee01-4ef1-92b2-0fc3d6a7af942023-06-23T08:36:51ZSpin pumping through nanocrystalline yopological insulatorsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ca109984-ee01-4ef1-92b2-0fc3d6a7af94EnglishSymplectic ElementsIOP Publishing2023Burn, DMLin, J-CFujita, RAchinuq, BBibby, JSingh, AFrisk, Avan der Laan, GHesjedal, TThe topological surface states (TSSs) in topological insulators (TIs) offer exciting prospects for dissipationless spin transport. Common spin-based devices, such as spin valves, rely on trilayer structures in which a non-magnetic (NM) layer is sandwiched between two ferromagnetic (FM) layers. The major disadvantage of using high-quality single-crystalline TI films in this context is that a single pair of spin-momentum locked channels spans across the entire film, meaning that only a very small spin current can be pumped from one FM to the other, along the side walls of the film. On the other hand, using nanocrystalline TI films, in which the grains are large enough to avoid hybridization of the TSSs, will effectively increase the number of spin channels available for spin pumping. Here, we used an element-selective, x-ray based ferromagnetic resonance technique to demonstrate spin pumping from a FM layer at resonance through the TI layer and into the FM spin sink. |
| spellingShingle | Burn, DM Lin, J-C Fujita, R Achinuq, B Bibby, J Singh, A Frisk, A van der Laan, G Hesjedal, T Spin pumping through nanocrystalline yopological insulators |
| title | Spin pumping through nanocrystalline yopological insulators |
| title_full | Spin pumping through nanocrystalline yopological insulators |
| title_fullStr | Spin pumping through nanocrystalline yopological insulators |
| title_full_unstemmed | Spin pumping through nanocrystalline yopological insulators |
| title_short | Spin pumping through nanocrystalline yopological insulators |
| title_sort | spin pumping through nanocrystalline yopological insulators |
| work_keys_str_mv | AT burndm spinpumpingthroughnanocrystallineyopologicalinsulators AT linjc spinpumpingthroughnanocrystallineyopologicalinsulators AT fujitar spinpumpingthroughnanocrystallineyopologicalinsulators AT achinuqb spinpumpingthroughnanocrystallineyopologicalinsulators AT bibbyj spinpumpingthroughnanocrystallineyopologicalinsulators AT singha spinpumpingthroughnanocrystallineyopologicalinsulators AT friska spinpumpingthroughnanocrystallineyopologicalinsulators AT vanderlaang spinpumpingthroughnanocrystallineyopologicalinsulators AT hesjedalt spinpumpingthroughnanocrystallineyopologicalinsulators |