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Abstract:

We theoretically investigate the interband transitions and quantum kinetics induced by light carrying orbital angular momentum, or twisted light, in bulk semiconductors. We pose the problem in terms of the Heisenberg equations of motion of the electron populations, and interband and intraband coherences. Our theory extends the free-carrier semiconductor Bloch equations to the case of photoexcitation by twisted light. The theory is formulated using cylindrical coordinates, which are better suited to describe the interaction with twisted light than the usual Cartesian coordinates used to study regular optical excitation. We solve the equations of motion in the low excitation regime, and obtain analytical expressions for the coherences and populations; with these, we calculate the orbital angular momentum transferred from the light to the electrons and the paramagnetic and diamagnetic electric current densities. © 2010 The American Physical Society.

Registro:

Documento: Artículo
Título:Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics
Autor:Quinteiro, G.F.; Tamborenea, P.I.
Filiación:Departamento de Física, IFIBA, Pabellón i, 1428 Ciudad de Buenos Aires, Argentina
Año:2010
Volumen:82
Número:12
DOI: http://dx.doi.org/10.1103/PhysRevB.82.125207
Título revista:Physical Review B - Condensed Matter and Materials Physics
Título revista abreviado:Phys. Rev. B Condens. Matter Mater. Phys.
ISSN:10980121
CODEN:PRBMD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v82_n12_p_Quinteiro

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Citas:

---------- APA ----------
Quinteiro, G.F. & Tamborenea, P.I. (2010) . Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics. Physical Review B - Condensed Matter and Materials Physics, 82(12).
http://dx.doi.org/10.1103/PhysRevB.82.125207
---------- CHICAGO ----------
Quinteiro, G.F., Tamborenea, P.I. "Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics" . Physical Review B - Condensed Matter and Materials Physics 82, no. 12 (2010).
http://dx.doi.org/10.1103/PhysRevB.82.125207
---------- MLA ----------
Quinteiro, G.F., Tamborenea, P.I. "Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics" . Physical Review B - Condensed Matter and Materials Physics, vol. 82, no. 12, 2010.
http://dx.doi.org/10.1103/PhysRevB.82.125207
---------- VANCOUVER ----------
Quinteiro, G.F., Tamborenea, P.I. Twisted-light-induced optical transitions in semiconductors: Free-carrier quantum kinetics. Phys. Rev. B Condens. Matter Mater. Phys. 2010;82(12).
http://dx.doi.org/10.1103/PhysRevB.82.125207