Electrically tunable transverse magnetic focusing in graphene
Author's final manuscript January 9, 2013
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Nature Publishing Group
2013
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| Online Access: | http://hdl.handle.net/1721.1/79915 https://orcid.org/0000-0001-8217-8213 |
| _version_ | 1826206135680499712 |
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| author | Taychatanapat, Thiti Watanabe, Kenji Taniguchi, Takashi Jarillo-Herrero, Pablo |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Taychatanapat, Thiti Watanabe, Kenji Taniguchi, Takashi Jarillo-Herrero, Pablo |
| author_sort | Taychatanapat, Thiti |
| collection | MIT |
| description | Author's final manuscript January 9, 2013 |
| first_indexed | 2024-09-23T13:24:39Z |
| format | Article |
| id | mit-1721.1/79915 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:24:39Z |
| publishDate | 2013 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/799152022-10-01T15:05:28Z Electrically tunable transverse magnetic focusing in graphene Taychatanapat, Thiti Watanabe, Kenji Taniguchi, Takashi Jarillo-Herrero, Pablo Massachusetts Institute of Technology. Department of Physics Taychatanapat, Thiti Jarillo-Herrero, Pablo Author's final manuscript January 9, 2013 Electrons in a periodic lattice can propagate without scattering for macroscopic distances despite the presence of the non-uniform Coulomb potential due to the nuclei. Such ballistic motion of electrons allows the use of a transverse magnetic field to focus electrons. This phenomenon, known as transverse magnetic focusing (TMF), has been used to study the Fermi surface of metals and semiconductor heterostructures, as well as to investigate Andreev reflection and spin–orbit interaction, and to detect composite fermions. Here we report on the experimental observation of TMF in high-mobility mono-, bi- and tri-layer graphene devices. The ability to tune the graphene carrier density enables us to investigate TMF continuously from the hole to the electron regime and analyse the resulting focusing fan. Moreover, by applying a transverse electric field to tri-layer graphene, we use TMF as a ballistic electron spectroscopy method to investigate controlled changes in the electronic structure of a material. Finally, we demonstrate that TMF survives in graphene up to 300 K, by far the highest temperature reported for any system, opening the door to new room-temperature applications based on electron-optics. National Science Foundation (U.S.) (CAREER Award DMR-0845287) United States. Office of Naval Research. GATE MURI Project 2013-08-22T13:48:09Z 2013-08-22T13:48:09Z 2013-02 2012-10 Article http://purl.org/eprint/type/JournalArticle 1745-2473 1745-2481 http://hdl.handle.net/1721.1/79915 Taychatanapat, Thiti, Kenji Watanabe, Takashi Taniguchi, and Pablo Jarillo-Herrero. “Electrically tunable transverse magnetic focusing in graphene.” Nature Physics 9, no. 4 (February 17, 2013): 225-229. https://orcid.org/0000-0001-8217-8213 en_US http://dx.doi.org/10.1038/nphys2549 Nature Physics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Nature Publishing Group arXiv |
| spellingShingle | Taychatanapat, Thiti Watanabe, Kenji Taniguchi, Takashi Jarillo-Herrero, Pablo Electrically tunable transverse magnetic focusing in graphene |
| title | Electrically tunable transverse magnetic focusing in graphene |
| title_full | Electrically tunable transverse magnetic focusing in graphene |
| title_fullStr | Electrically tunable transverse magnetic focusing in graphene |
| title_full_unstemmed | Electrically tunable transverse magnetic focusing in graphene |
| title_short | Electrically tunable transverse magnetic focusing in graphene |
| title_sort | electrically tunable transverse magnetic focusing in graphene |
| url | http://hdl.handle.net/1721.1/79915 https://orcid.org/0000-0001-8217-8213 |
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