Giant Nonlocality Near the Dirac Point in Graphene
Transport measurements have been a powerful tool for discovering electronic phenomena in graphene. We report nonlocal measurements performed in the Hall bar geometry with voltage probes far away from the classical path of charge flow. We observed a large nonlocal response near the Dirac point in fie...
| Main Authors: | , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Association for the Advancement of Science (AAAS)
2017
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| Online Access: | http://hdl.handle.net/1721.1/108454 https://orcid.org/0000-0002-4268-731X |
| _version_ | 1826209972047839232 |
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| author | Abanin, D. A. Morozov, S. V. Ponomarenko, L. A. Gorbachev, R. V. Mayorov, A. S. Katsnelson, M. I. Watanabe, K. Taniguchi, T. Novoselov, K. S. Geim, A. K. Levitov, Leonid |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Abanin, D. A. Morozov, S. V. Ponomarenko, L. A. Gorbachev, R. V. Mayorov, A. S. Katsnelson, M. I. Watanabe, K. Taniguchi, T. Novoselov, K. S. Geim, A. K. Levitov, Leonid |
| author_sort | Abanin, D. A. |
| collection | MIT |
| description | Transport measurements have been a powerful tool for discovering electronic phenomena in graphene. We report nonlocal measurements performed in the Hall bar geometry with voltage probes far away from the classical path of charge flow. We observed a large nonlocal response near the Dirac point in fields as low as 0.1 tesla, which persisted up to room temperature. The nonlocality is consistent with the long-range flavor currents induced by the lifting of spin/valley degeneracy. The effect is expected to contribute strongly to all magnetotransport phenomena near the neutrality point. |
| first_indexed | 2024-09-23T14:37:52Z |
| format | Article |
| id | mit-1721.1/108454 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:37:52Z |
| publishDate | 2017 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1084542022-10-01T21:53:02Z Giant Nonlocality Near the Dirac Point in Graphene Abanin, D. A. Morozov, S. V. Ponomarenko, L. A. Gorbachev, R. V. Mayorov, A. S. Katsnelson, M. I. Watanabe, K. Taniguchi, T. Novoselov, K. S. Geim, A. K. Levitov, Leonid Massachusetts Institute of Technology. Department of Physics Levitov, Leonid Levitov, Leonid Transport measurements have been a powerful tool for discovering electronic phenomena in graphene. We report nonlocal measurements performed in the Hall bar geometry with voltage probes far away from the classical path of charge flow. We observed a large nonlocal response near the Dirac point in fields as low as 0.1 tesla, which persisted up to room temperature. The nonlocality is consistent with the long-range flavor currents induced by the lifting of spin/valley degeneracy. The effect is expected to contribute strongly to all magnetotransport phenomena near the neutrality point. United States. Office of Naval Research United States. Air Force. Office of Scientific Research 2017-04-27T17:16:34Z 2017-04-27T17:16:34Z 2011-04 Article http://purl.org/eprint/type/JournalArticle 0036-8075 1095-9203 http://hdl.handle.net/1721.1/108454 Abanin, D. A., S. V. Morozov, L. A. Ponomarenko, R. V. Gorbachev, A. S. Mayorov, M. I. Katsnelson, K. Watanabe, et al. “Giant Nonlocality Near the Dirac Point in Graphene.” Science 332, no. 6027 (April 14, 2011): 328–330. https://orcid.org/0000-0002-4268-731X en_US http://dx.doi.org/10.1126/science.1199595 Science Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf American Association for the Advancement of Science (AAAS) Prof. Levitov via Mat Willmott |
| spellingShingle | Abanin, D. A. Morozov, S. V. Ponomarenko, L. A. Gorbachev, R. V. Mayorov, A. S. Katsnelson, M. I. Watanabe, K. Taniguchi, T. Novoselov, K. S. Geim, A. K. Levitov, Leonid Giant Nonlocality Near the Dirac Point in Graphene |
| title | Giant Nonlocality Near the Dirac Point in Graphene |
| title_full | Giant Nonlocality Near the Dirac Point in Graphene |
| title_fullStr | Giant Nonlocality Near the Dirac Point in Graphene |
| title_full_unstemmed | Giant Nonlocality Near the Dirac Point in Graphene |
| title_short | Giant Nonlocality Near the Dirac Point in Graphene |
| title_sort | giant nonlocality near the dirac point in graphene |
| url | http://hdl.handle.net/1721.1/108454 https://orcid.org/0000-0002-4268-731X |
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