Spin-valley splitting of electron beam in graphene
We study spatial separation of the four degenerate spin-valley components of an electron beam in a EuO-induced and top-gated ferromagnetic/pristine/strained graphene structure. We show that, in a full resonant tunneling regime for all beam components, the formation of standing waves can lead sudden...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2016-11-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4968180 |
| _version_ | 1819141057377468416 |
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| author | Yu Song Lei Xie Zhi-Gui Shi Shun Li Jian Zhang |
| author_facet | Yu Song Lei Xie Zhi-Gui Shi Shun Li Jian Zhang |
| author_sort | Yu Song |
| collection | DOAJ |
| description | We study spatial separation of the four degenerate spin-valley components of an electron beam in a EuO-induced and top-gated ferromagnetic/pristine/strained graphene structure. We show that, in a full resonant tunneling regime for all beam components, the formation of standing waves can lead sudden phase jumps ∼−π and giant lateral Goos-Hänchen shifts as large as the transverse beam width, while the interplay of the spin and valley imaginary wave vectors in the modulated regions can lead differences of resonant angles for the four spin-valley flavors, manifesting a spin-valley beam splitting effect. The splitting effect is found to be controllable by the gating and strain. |
| first_indexed | 2024-12-22T11:48:24Z |
| format | Article |
| id | doaj.art-a9621b77d30f4b62af609fa9da6024a5 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-22T11:48:24Z |
| publishDate | 2016-11-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-a9621b77d30f4b62af609fa9da6024a52022-12-21T18:27:05ZengAIP Publishing LLCAIP Advances2158-32262016-11-01611115215115215-610.1063/1.4968180067611ADVSpin-valley splitting of electron beam in grapheneYu Song0Lei Xie1Zhi-Gui Shi2Shun Li3Jian Zhang4Microsystems and Terahertz Research Center, China Academy of Engineering Physics, Chengdu 610200, People’s Republic of ChinaMicrosystems and Terahertz Research Center, China Academy of Engineering Physics, Chengdu 610200, People’s Republic of ChinaMicrosystems and Terahertz Research Center, China Academy of Engineering Physics, Chengdu 610200, People’s Republic of ChinaMicrosystems and Terahertz Research Center, China Academy of Engineering Physics, Chengdu 610200, People’s Republic of ChinaMicrosystems and Terahertz Research Center, China Academy of Engineering Physics, Chengdu 610200, People’s Republic of ChinaWe study spatial separation of the four degenerate spin-valley components of an electron beam in a EuO-induced and top-gated ferromagnetic/pristine/strained graphene structure. We show that, in a full resonant tunneling regime for all beam components, the formation of standing waves can lead sudden phase jumps ∼−π and giant lateral Goos-Hänchen shifts as large as the transverse beam width, while the interplay of the spin and valley imaginary wave vectors in the modulated regions can lead differences of resonant angles for the four spin-valley flavors, manifesting a spin-valley beam splitting effect. The splitting effect is found to be controllable by the gating and strain.http://dx.doi.org/10.1063/1.4968180 |
| spellingShingle | Yu Song Lei Xie Zhi-Gui Shi Shun Li Jian Zhang Spin-valley splitting of electron beam in graphene AIP Advances |
| title | Spin-valley splitting of electron beam in graphene |
| title_full | Spin-valley splitting of electron beam in graphene |
| title_fullStr | Spin-valley splitting of electron beam in graphene |
| title_full_unstemmed | Spin-valley splitting of electron beam in graphene |
| title_short | Spin-valley splitting of electron beam in graphene |
| title_sort | spin valley splitting of electron beam in graphene |
| url | http://dx.doi.org/10.1063/1.4968180 |
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