Artículo
Farías, M.B.; Quinteiro, G.F.; Tamboreneaa, P.I. "Photoexcitation of graphene with twisted light" (2013) European Physical Journal B. 86(10)
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Abstract:
We study theoretically the interaction of twisted light with graphene. The light-matter interaction matrix elements between the tight-binding states of electrons in graphene are determined near the Dirac points. We examine the dynamics of the photoexcitation process by posing the equations of motion of the density matrix and working up to second order in the field. The time evolution of the angular momentum of the photoexcited electrons and their associated photocurrents are examined in order to elucidate the mechanisms of angular momentum transfer. We find that the transfer of spin and orbital angular momentum from light to the electrons is more akin here to the case of intraband than of interband transitions in semiconductors, due to the fact that the two relevant energy bands of graphene originate from the same atomic orbitals.© EDP Sciences Società Italiana di Fisica Springer-Verlag 2013.
Registro:
| Documento: | Artículo |
| Título: | Photoexcitation of graphene with twisted light |
| Autor: | Farías, M.B.; Quinteiro, G.F.; Tamboreneaa, P.I. |
| Filiación: | Departamento de Física e IFIBA, Universidad de Buenos Aires, Ciudad Universitaria, Pab. I, C1428EHA Buenos Aires, Argentina |
| Palabras clave: | Atomic orbital; Density matrix; Inter-band transition; Light-matter interactions; Orbital angular momentum; Photo-excitation process; Photoexcited electrons; Time evolutions; Angular momentum; Equations of motion; Orbital transfer; Photoexcitation; Quantum chemistry; Graphene |
| Año: | 2013 |
| Volumen: | 86 |
| Número: | 10 |
| DOI: | http://dx.doi.org/10.1140/epjb/e2013-40621-2 |
| Título revista: | European Physical Journal B |
| Título revista abreviado: | Eur. Phys. J. B |
| ISSN: | 14346028 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346028_v86_n10_p_Farias |
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Citas:
---------- APA ----------
Farías, M.B., Quinteiro, G.F. & Tamboreneaa, P.I. (2013) . Photoexcitation of graphene with twisted light. European Physical Journal B, 86(10).http://dx.doi.org/10.1140/epjb/e2013-40621-2
---------- CHICAGO ----------
Farías, M.B., Quinteiro, G.F., Tamboreneaa, P.I. "Photoexcitation of graphene with twisted light" . European Physical Journal B 86, no. 10 (2013).http://dx.doi.org/10.1140/epjb/e2013-40621-2
---------- MLA ----------
Farías, M.B., Quinteiro, G.F., Tamboreneaa, P.I. "Photoexcitation of graphene with twisted light" . European Physical Journal B, vol. 86, no. 10, 2013.http://dx.doi.org/10.1140/epjb/e2013-40621-2
---------- VANCOUVER ----------
Farías, M.B., Quinteiro, G.F., Tamboreneaa, P.I. Photoexcitation of graphene with twisted light. Eur. Phys. J. B. 2013;86(10).http://dx.doi.org/10.1140/epjb/e2013-40621-2
