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Abstract:

We theoretically investigate the generation of electric currents in quantum rings resulting from the optical excitation with twisted light. Our model describes the kinetics of electrons in a two-band model of a semiconductor-based mesoscopic quantum ring coupled to light having orbital angular momentum (twisted light). We find the analytical solution, which exhibits a circular photon-drag effect and an induced magnetization, suggesting that this system is the circular analog of that of a bulk semiconductor excited by plane waves. For realistic values of the electric field and material parameters, the computed electric current can be as large as juA; from an applied perspective, this opens new possibilities to the optical control of the magnetization in semiconductors. © 2009 Optical Society of America.

Registro:

Documento: Artículo
Título:Electric currents induced by twisted light in quantum rings
Autor:Quinteiro, G.F.; Berakdar, J.
Filiación:Departamento de Física J. J. Giambiagi, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón I, C1428EGA Ciudad de Buenos Aires, Argentina
Institut für Physik, Martin-Luther Universitüt Halle-Wittenberg, 06120 Halle (Saale), Germany
Palabras clave:Electric currents; Electric fields; Magnetization; Nanorings; Bulk semiconductors; Induced magnetizations; Material parameter; Optical control; Orbital angular momentum; Photon drag effects; Quantum ring; Two-band model; Electric excitation; article; computer simulation; electromagnetic field; light; quantum theory; radiation scattering; rotation; theoretical model; Computer Simulation; Electromagnetic Fields; Light; Models, Theoretical; Quantum Theory; Rotation; Scattering, Radiation
Año:2009
Volumen:17
Número:22
Página de inicio:20465
Página de fin:20475
DOI: http://dx.doi.org/10.1364/OE.17.020465
Título revista:Optics Express
Título revista abreviado:Opt. Express
ISSN:10944087
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10944087_v17_n22_p20465_Quinteiro

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Citas:

---------- APA ----------
Quinteiro, G.F. & Berakdar, J. (2009) . Electric currents induced by twisted light in quantum rings. Optics Express, 17(22), 20465-20475.
http://dx.doi.org/10.1364/OE.17.020465
---------- CHICAGO ----------
Quinteiro, G.F., Berakdar, J. "Electric currents induced by twisted light in quantum rings" . Optics Express 17, no. 22 (2009) : 20465-20475.
http://dx.doi.org/10.1364/OE.17.020465
---------- MLA ----------
Quinteiro, G.F., Berakdar, J. "Electric currents induced by twisted light in quantum rings" . Optics Express, vol. 17, no. 22, 2009, pp. 20465-20475.
http://dx.doi.org/10.1364/OE.17.020465
---------- VANCOUVER ----------
Quinteiro, G.F., Berakdar, J. Electric currents induced by twisted light in quantum rings. Opt. Express. 2009;17(22):20465-20475.
http://dx.doi.org/10.1364/OE.17.020465