Artículo
Quinteiro, G.F. "Below-bandgap excitation of bulk semiconductors by twisted light" (2010) EPL. 91(2)
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Abstract:
I theoretically investigate the excitation of bulk semiconductors by twisted light below the energy bandgap. To this end, I modify a well-known model of light-semiconductor interaction to account for the conservation of the momentum of light. I predict that the optical excitation produces a superposition of exciton-like states that undergo a complex center-of-mass motion. In addition, I show that the energy at which the absorption occurs is slightly different from that of pure excitons, due to the center-of-mass kinetic energy of the new states. Finally, I provide expressions for the induced polarization and electric current, which exhibit complex spatial patterns that mimic the twisted-light electric field. Copyright © 2010 EPLA.
Registro:
| Documento: | Artículo |
| Título: | Below-bandgap excitation of bulk semiconductors by twisted light |
| Autor: | Quinteiro, G.F. |
| Filiación: | Departamento de Física J. J. Giambiagi, Universidad de Buenos Aires Ciudad Universitaria, Pabellón I, C1428EGA Ciudad de Buenos Aires, Argentina Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina |
| Año: | 2010 |
| Volumen: | 91 |
| Número: | 2 |
| DOI: | http://dx.doi.org/10.1209/0295-5075/91/27002 |
| Título revista: | EPL |
| Título revista abreviado: | EPL |
| ISSN: | 02955075 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v91_n2_p_Quinteiro |
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Citas:
---------- APA ----------
(2010) . Below-bandgap excitation of bulk semiconductors by twisted light. EPL, 91(2).http://dx.doi.org/10.1209/0295-5075/91/27002
---------- CHICAGO ----------
Quinteiro, G.F. "Below-bandgap excitation of bulk semiconductors by twisted light" . EPL 91, no. 2 (2010).http://dx.doi.org/10.1209/0295-5075/91/27002
---------- MLA ----------
Quinteiro, G.F. "Below-bandgap excitation of bulk semiconductors by twisted light" . EPL, vol. 91, no. 2, 2010.http://dx.doi.org/10.1209/0295-5075/91/27002
---------- VANCOUVER ----------
Quinteiro, G.F. Below-bandgap excitation of bulk semiconductors by twisted light. EPL. 2010;91(2).http://dx.doi.org/10.1209/0295-5075/91/27002
