Unraveling the interlayer-related phonon self-energy renormalization in bilayer graphene
In this letter, we present a step towards understanding the bilayer graphene (2LG) interlayer (IL)-related phonon combination modes and overtones as well as their phonon self-energy renormalizations by using both gate-modulated and laser-energy dependent inelastic scattering spectroscopy. We show th...
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| Format: | Article |
| Language: | en_US |
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Nature Publishing Group
2014
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| Online Access: | http://hdl.handle.net/1721.1/87119 https://orcid.org/0000-0001-8492-2261 https://orcid.org/0000-0003-0551-1208 https://orcid.org/0000-0003-2015-611X |
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| author | Araujo, Paulo Antonio Trinidade Mafra, Daniela Lopes Sato, Kentaro Saito, Riichiro Kong, Jing Dresselhaus, Mildred |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Araujo, Paulo Antonio Trinidade Mafra, Daniela Lopes Sato, Kentaro Saito, Riichiro Kong, Jing Dresselhaus, Mildred |
| author_sort | Araujo, Paulo Antonio Trinidade |
| collection | MIT |
| description | In this letter, we present a step towards understanding the bilayer graphene (2LG) interlayer (IL)-related phonon combination modes and overtones as well as their phonon self-energy renormalizations by using both gate-modulated and laser-energy dependent inelastic scattering spectroscopy. We show that although the IL interactions are weak, their respective phonon renormalization response is significant. Particularly special, the IL interactions are mediated by Van der Waals forces and are fundamental for understanding low-energy phenomena such as transport and infrared optics. Our approach opens up a new route to understanding fundamental properties of IL interactions which can be extended to any graphene-like material, such as MoS2, WSe2, oxides and hydroxides. Furthermore, we report a previously elusive crossing between IL-related phonon combination modes in 2LG, which might have important technological applications. |
| first_indexed | 2024-09-23T09:45:24Z |
| format | Article |
| id | mit-1721.1/87119 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T09:45:24Z |
| publishDate | 2014 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | mit-1721.1/871192022-09-30T16:35:44Z Unraveling the interlayer-related phonon self-energy renormalization in bilayer graphene Araujo, Paulo Antonio Trinidade Mafra, Daniela Lopes Sato, Kentaro Saito, Riichiro Kong, Jing Dresselhaus, Mildred Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Physics Araujo, Paulo Antonio Trinidade Mafra, Daniela Lopes Kong, Jing Dresselhaus, Mildred In this letter, we present a step towards understanding the bilayer graphene (2LG) interlayer (IL)-related phonon combination modes and overtones as well as their phonon self-energy renormalizations by using both gate-modulated and laser-energy dependent inelastic scattering spectroscopy. We show that although the IL interactions are weak, their respective phonon renormalization response is significant. Particularly special, the IL interactions are mediated by Van der Waals forces and are fundamental for understanding low-energy phenomena such as transport and infrared optics. Our approach opens up a new route to understanding fundamental properties of IL interactions which can be extended to any graphene-like material, such as MoS2, WSe2, oxides and hydroxides. Furthermore, we report a previously elusive crossing between IL-related phonon combination modes in 2LG, which might have important technological applications. United States. Office of Naval Research (ONR-MURI-N00014-09-1-1063) Conselho Nacional de Pesquisas (Brazil) Japan. Ministry of Education, Culture, Sports, Science and Technology (grant No.20241023) Japan. Ministry of Education, Culture, Sports, Science and Technology (grant No.23710118) 2014-05-23T14:45:58Z 2014-05-23T14:45:58Z 2012-12 2012-09 Article http://purl.org/eprint/type/JournalArticle 2045-2322 http://hdl.handle.net/1721.1/87119 Araujo, Paulo T., Daniela L. Mafra, Kentaro Sato, Riichiro Saito, Jing Kong, and Mildred S. Dresselhaus. “Unraveling the Interlayer-Related Phonon Self-Energy Renormalization in Bilayer Graphene.” Sci. Rep. 2 (December 21, 2012). https://orcid.org/0000-0001-8492-2261 https://orcid.org/0000-0003-0551-1208 https://orcid.org/0000-0003-2015-611X en_US http://dx.doi.org/10.1038/srep01017 Scientific Reports Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 Unported License http://creativecommons.org/licenses/by-nc-nd/3.0/ application/pdf Nature Publishing Group Scientific Reports |
| spellingShingle | Araujo, Paulo Antonio Trinidade Mafra, Daniela Lopes Sato, Kentaro Saito, Riichiro Kong, Jing Dresselhaus, Mildred Unraveling the interlayer-related phonon self-energy renormalization in bilayer graphene |
| title | Unraveling the interlayer-related phonon self-energy renormalization in bilayer graphene |
| title_full | Unraveling the interlayer-related phonon self-energy renormalization in bilayer graphene |
| title_fullStr | Unraveling the interlayer-related phonon self-energy renormalization in bilayer graphene |
| title_full_unstemmed | Unraveling the interlayer-related phonon self-energy renormalization in bilayer graphene |
| title_short | Unraveling the interlayer-related phonon self-energy renormalization in bilayer graphene |
| title_sort | unraveling the interlayer related phonon self energy renormalization in bilayer graphene |
| url | http://hdl.handle.net/1721.1/87119 https://orcid.org/0000-0001-8492-2261 https://orcid.org/0000-0003-0551-1208 https://orcid.org/0000-0003-2015-611X |
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