Hall Drag and Magnetodrag in Graphene
Massless Dirac fermions in graphene at charge neutrality form a strongly interacting system in which both charged and neutral (energy) modes play an important role. These modes are essentially decoupled in the absence of a magnetic field, but become strongly coupled when the field is applied. We sho...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2014
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| Online Access: | http://hdl.handle.net/1721.1/84980 https://orcid.org/0000-0002-4268-731X |
| _version_ | 1811007484040577024 |
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| author | Song, Justin Chien Wen Levitov, Leonid |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Song, Justin Chien Wen Levitov, Leonid |
| author_sort | Song, Justin Chien Wen |
| collection | MIT |
| description | Massless Dirac fermions in graphene at charge neutrality form a strongly interacting system in which both charged and neutral (energy) modes play an important role. These modes are essentially decoupled in the absence of a magnetic field, but become strongly coupled when the field is applied. We show that this regime is characterized by strong magnetodrag and Hall drag, originating from long-range energy currents and spatial temperature gradients. The energy-driven effects arise in a wide temperature range, and feature an unusually strong dependence on field and carrier density. We argue that this mechanism accounts for the recently observed giant magnetodrag and Hall drag occurring at classically weak fields. |
| first_indexed | 2024-09-23T17:08:44Z |
| format | Article |
| id | mit-1721.1/84980 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T17:08:44Z |
| publishDate | 2014 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/849802022-09-29T23:57:16Z Hall Drag and Magnetodrag in Graphene Song, Justin Chien Wen Levitov, Leonid Massachusetts Institute of Technology. Department of Physics Song, Justin Chien Wen Levitov, Leonid Massless Dirac fermions in graphene at charge neutrality form a strongly interacting system in which both charged and neutral (energy) modes play an important role. These modes are essentially decoupled in the absence of a magnetic field, but become strongly coupled when the field is applied. We show that this regime is characterized by strong magnetodrag and Hall drag, originating from long-range energy currents and spatial temperature gradients. The energy-driven effects arise in a wide temperature range, and feature an unusually strong dependence on field and carrier density. We argue that this mechanism accounts for the recently observed giant magnetodrag and Hall drag occurring at classically weak fields. 2014-02-18T17:25:09Z 2014-02-18T17:25:09Z 2013-09 2013-03 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/84980 Song, Justin C. W., and Leonid S. Levitov. “Hall Drag and Magnetodrag in Graphene.” Physical Review Letters 111, no. 12 (September 2013). © 2013 American Physical Society https://orcid.org/0000-0002-4268-731X en_US http://dx.doi.org/10.1103/PhysRevLett.111.126601 Physical Review Letters 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 American Physical Society American Physical Society |
| spellingShingle | Song, Justin Chien Wen Levitov, Leonid Hall Drag and Magnetodrag in Graphene |
| title | Hall Drag and Magnetodrag in Graphene |
| title_full | Hall Drag and Magnetodrag in Graphene |
| title_fullStr | Hall Drag and Magnetodrag in Graphene |
| title_full_unstemmed | Hall Drag and Magnetodrag in Graphene |
| title_short | Hall Drag and Magnetodrag in Graphene |
| title_sort | hall drag and magnetodrag in graphene |
| url | http://hdl.handle.net/1721.1/84980 https://orcid.org/0000-0002-4268-731X |
| work_keys_str_mv | AT songjustinchienwen halldragandmagnetodragingraphene AT levitovleonid halldragandmagnetodragingraphene |