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Ultrafast nonlinear optical response of Dirac fermions in graphene
| dc.contributor.author | Baudisch, Matthias |
| dc.contributor.author | Marini, Andrea |
| dc.contributor.author | Cox, Joel D. |
| dc.contributor.author | Zhu, Tony |
| dc.contributor.author | Silva, Francisco |
| dc.contributor.author | Teichmann, Stephan |
| dc.contributor.author | Massicotte, Mathieu |
| dc.contributor.author | Koppens, Frank |
| dc.contributor.author | Levitov, Leonid S. |
| dc.contributor.author | García de Abajo, F. Javier |
| dc.contributor.author | Biegert, Jens |
| dc.contributor.other | Universitat Politècnica de Catalunya. Institut de Ciències Fotòniques |
| dc.date.accessioned | 2018-03-15T09:57:25Z |
| dc.date.available | 2018-03-15T09:57:25Z |
| dc.date.issued | 2018-03-09 |
| dc.identifier.citation | Baudisch, M. [et al.]. Ultrafast nonlinear optical response of Dirac fermions in graphene. "Nature Communications", 9 Març 2018, vol. 9, núm. 1018, p. 1-6. |
| dc.identifier.uri | http://hdl.handle.net/2117/115206 |
| dc.description.abstract | The speed of solid-state electronic devices, determined by the temporal dynamics of charge carriers, could potentially reach unprecedented petahertz frequencies through direct manipulation by optical fields, consisting in a million-fold increase from state-of-the-art technology. In graphene, charge carrier manipulation is facilitated by exceptionally strong coupling to optical fields, from which stems an important back-action of photoexcited carriers. Here we investigate the instantaneous response of graphene to ultrafast optical fields, elucidating the role of hot carriers on sub-100 fs timescales. The measured nonlinear response and its dependence on interaction time and field polarization reveal the back-action of hot carriers over timescales commensurate with the optical field. An intuitive picture is given for the carrier trajectories in response to the optical-field polarization state. We note that the peculiar interplay between optical fields and charge carriers in graphene may also apply to surface states in topological insulators with similar Dirac cone dispersion relations. |
| dc.format.extent | 6 p. |
| dc.language.iso | eng |
| dc.publisher | Nature |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| dc.subject | Àrees temàtiques de la UPC::Física |
| dc.subject.lcsh | Graphene |
| dc.subject.other | graphene |
| dc.title | Ultrafast nonlinear optical response of Dirac fermions in graphene |
| dc.type | Article |
| dc.subject.lemac | Grafè |
| dc.description.peerreviewed | Peer Reviewed |
| dc.relation.publisherversion | https://www.nature.com/articles/s41467-018-03413-7 |
| dc.rights.access | Open Access |
| dc.description.version | Postprint (published version) |
| dc.relation.projectid | SEV-2015- 0522 |
| dc.relation.projectid | FIS2014-56774-R |
| dc.relation.projectid | FIS2014-51478-ERC |
| dc.relation.projectid | EU-H2020 654148 |
| dc.relation.projectid | 641272 |
| upcommons.citation.published | true |
| upcommons.citation.publicationName | Nature Communications |
| upcommons.citation.volume | 9 |
| upcommons.citation.number | 1018 |
| upcommons.citation.startingPage | 1 |
| upcommons.citation.endingPage | 6 |
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