Large spin-orbit coupling in carbon nanotubes.
It has recently been recognised that the strong spin-orbit interaction present in solids can lead to new phenomena, such as materials with non-trivial topological order. Although the atomic spin-orbit coupling in carbon is weak, the spin-orbit coupling in carbon nanotubes can be significant due to t...
| Main Authors: | , , , , , |
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| 格式: | Journal article |
| 語言: | English |
| 出版: |
2013
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| _version_ | 1826282850525118464 |
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| author | Steele, G Pei, F Laird, E Jol, J Meerwaldt, H Kouwenhoven, L |
| author_facet | Steele, G Pei, F Laird, E Jol, J Meerwaldt, H Kouwenhoven, L |
| author_sort | Steele, G |
| collection | OXFORD |
| description | It has recently been recognised that the strong spin-orbit interaction present in solids can lead to new phenomena, such as materials with non-trivial topological order. Although the atomic spin-orbit coupling in carbon is weak, the spin-orbit coupling in carbon nanotubes can be significant due to their curved surface. Previous works have reported spin-orbit couplings in reasonable agreement with theory, and this coupling strength has formed the basis of a large number of theoretical proposals. Here we report a spin-orbit coupling in three carbon nanotube devices that is an order of magnitude larger than previously measured. We find a zero-field spin splitting of up to 3.4 meV, corresponding to a built-in effective magnetic field of 29 T aligned along the nanotube axis. Although the origin of the large spin-orbit coupling is not explained by existing theories, its strength is promising for applications of the spin-orbit interaction in carbon nanotubes devices. |
| first_indexed | 2024-03-07T00:50:03Z |
| format | Journal article |
| id | oxford-uuid:86112cb4-a304-4c5c-ad32-0229ceeb1a3e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:50:03Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:86112cb4-a304-4c5c-ad32-0229ceeb1a3e2022-03-26T22:01:41ZLarge spin-orbit coupling in carbon nanotubes.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:86112cb4-a304-4c5c-ad32-0229ceeb1a3eEnglishSymplectic Elements at Oxford2013Steele, GPei, FLaird, EJol, JMeerwaldt, HKouwenhoven, LIt has recently been recognised that the strong spin-orbit interaction present in solids can lead to new phenomena, such as materials with non-trivial topological order. Although the atomic spin-orbit coupling in carbon is weak, the spin-orbit coupling in carbon nanotubes can be significant due to their curved surface. Previous works have reported spin-orbit couplings in reasonable agreement with theory, and this coupling strength has formed the basis of a large number of theoretical proposals. Here we report a spin-orbit coupling in three carbon nanotube devices that is an order of magnitude larger than previously measured. We find a zero-field spin splitting of up to 3.4 meV, corresponding to a built-in effective magnetic field of 29 T aligned along the nanotube axis. Although the origin of the large spin-orbit coupling is not explained by existing theories, its strength is promising for applications of the spin-orbit interaction in carbon nanotubes devices. |
| spellingShingle | Steele, G Pei, F Laird, E Jol, J Meerwaldt, H Kouwenhoven, L Large spin-orbit coupling in carbon nanotubes. |
| title | Large spin-orbit coupling in carbon nanotubes. |
| title_full | Large spin-orbit coupling in carbon nanotubes. |
| title_fullStr | Large spin-orbit coupling in carbon nanotubes. |
| title_full_unstemmed | Large spin-orbit coupling in carbon nanotubes. |
| title_short | Large spin-orbit coupling in carbon nanotubes. |
| title_sort | large spin orbit coupling in carbon nanotubes |
| work_keys_str_mv | AT steeleg largespinorbitcouplingincarbonnanotubes AT peif largespinorbitcouplingincarbonnanotubes AT lairde largespinorbitcouplingincarbonnanotubes AT jolj largespinorbitcouplingincarbonnanotubes AT meerwaldth largespinorbitcouplingincarbonnanotubes AT kouwenhovenl largespinorbitcouplingincarbonnanotubes |