Probing valley phenomena with gate-defined valley splitters
Despite many reports of valley-related phenomena in graphene and its multilayers, current transport experiments cannot probe valley phenomena without the application of external fields. Here we propose a gate-defined valley splitter as a direct transport probe for valley phenomenon in graphene multi...
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| Format: | Article |
| Language: | English |
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SciPost
2025-02-01
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| Series: | SciPost Physics |
| Online Access: | https://scipost.org/SciPostPhys.18.2.062 |
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| author | Juan Daniel Torres Luna, Kostas Vilkelis, Antonio L. R. Manesco |
| author_facet | Juan Daniel Torres Luna, Kostas Vilkelis, Antonio L. R. Manesco |
| author_sort | Juan Daniel Torres Luna, Kostas Vilkelis, Antonio L. R. Manesco |
| collection | DOAJ |
| description | Despite many reports of valley-related phenomena in graphene and its multilayers, current transport experiments cannot probe valley phenomena without the application of external fields. Here we propose a gate-defined valley splitter as a direct transport probe for valley phenomenon in graphene multilayers. First, we show how the device works, its magnetotransport response, and its robustness against fabrication errors. Secondly, we present two applications for valley splitters: (i) resonant tunneling of quantum dots probed by a valley splitter shows the valley polarization of dot levels; (ii) a combination of two valley splitters resolves the nature of order parameters in mesoscopic samples. |
| format | Article |
| id | doaj-art-848a8f425266444e854d782c94bc3dfd |
| institution | DOAJ |
| issn | 2542-4653 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics |
| spelling | doaj-art-848a8f425266444e854d782c94bc3dfd2025-08-20T03:00:25ZengSciPostSciPost Physics2542-46532025-02-0118206210.21468/SciPostPhys.18.2.062Probing valley phenomena with gate-defined valley splittersJuan Daniel Torres Luna, Kostas Vilkelis, Antonio L. R. ManescoDespite many reports of valley-related phenomena in graphene and its multilayers, current transport experiments cannot probe valley phenomena without the application of external fields. Here we propose a gate-defined valley splitter as a direct transport probe for valley phenomenon in graphene multilayers. First, we show how the device works, its magnetotransport response, and its robustness against fabrication errors. Secondly, we present two applications for valley splitters: (i) resonant tunneling of quantum dots probed by a valley splitter shows the valley polarization of dot levels; (ii) a combination of two valley splitters resolves the nature of order parameters in mesoscopic samples.https://scipost.org/SciPostPhys.18.2.062 |
| spellingShingle | Juan Daniel Torres Luna, Kostas Vilkelis, Antonio L. R. Manesco Probing valley phenomena with gate-defined valley splitters SciPost Physics |
| title | Probing valley phenomena with gate-defined valley splitters |
| title_full | Probing valley phenomena with gate-defined valley splitters |
| title_fullStr | Probing valley phenomena with gate-defined valley splitters |
| title_full_unstemmed | Probing valley phenomena with gate-defined valley splitters |
| title_short | Probing valley phenomena with gate-defined valley splitters |
| title_sort | probing valley phenomena with gate defined valley splitters |
| url | https://scipost.org/SciPostPhys.18.2.062 |
| work_keys_str_mv | AT juandanieltorreslunakostasvilkelisantoniolrmanesco probingvalleyphenomenawithgatedefinedvalleysplitters |