Orbital and spin dynamics of intraband electrons in quantum rings driven by twisted light
We theoretically investigate the effect that twisted light has on the orbital and spin dynamics of electrons in quantum rings possessing sizable Rashba spin-orbit interaction. The system Hamiltonian for such a strongly inhomogeneous light field exhibits terms which induce both spin-conserving and sp...
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| Otros Autores: | , |
| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
Optical Society of American (OSA)
2011
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| Sumario: | We theoretically investigate the effect that twisted light has on the orbital and spin dynamics of electrons in quantum rings possessing sizable Rashba spin-orbit interaction. The system Hamiltonian for such a strongly inhomogeneous light field exhibits terms which induce both spin-conserving and spin-flip processes. We analyze the dynamics in terms of the perturbation introduced by a weak light field on the Rasha electronic states, and describe the effects that the orbital angular momentum as well as the inhomogeneous character of the beam have on the orbital and the spin dynamics. © 2011 Optical Society of America. |
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| Bibliografía: | Andrews, D.L., (2008) Structured Light and Its Applications: An Introduction to Phase-Structured Beams and Nanoscale Optical Forces, , Academic Press Quinteiro, G.F., Berakdar, J., Electric currents induced by twisted light in quantum rings (2009) Opt. Express, 17, p. 20465 Quinteiro, G.F., Tamborenea, P.I., Electronic transitions in disk-shaped quantum dots induced by twisted light (2009) Phys. Rev. B, 79, p. 155450 Quinteiro, G.F., Lucero, A.O., Tamborenea, P.I., Electronic transitions in quantum dots and rings induced by inhomogeneous off-centered light beams (2010) J. Phys.: Condens. Matter, 22, p. 505802 Fuhrer, A., Luscher, S., Ihn, T., Heinzel, T., Ensslin, K., Wegscheider, W., Bichler, M., Energy spectra of quantum rings (2001) Nature, 413 (6858), pp. 822-825. , DOI 10.1038/35101552 Babiker, M., Bennett, C.R., Andrews, D.L., Dávila Romero, L.C., Orbital angular momentum exchange in the interaction of twisted light with molecules (2002) Phys. Rev. Lett., 89, p. 143601 Zhu, Z.-G., Berakdar, J., Photoinduced nonequilibrium spin and charge polarization in quantum rings (2008) Phys. Rev. B, 77, p. 235438 Romano, C.L., Ulloa, S.E., Tamborenea, P.I., Level structure and spin-orbit effects in quasi-one-dimensional semiconductor nanostructures (2005) Phys. Rev. B, 71, p. 035336 Splettstoesser, J., Governale, M., Zülicke, U., Persistent current in ballistic mesoscopic rings with Rashba spin-orbit coupling (2003) Phys. Rev. B, 68, p. 165341 Haug, H., Koch, S.W., (2004) Quantum Theory of the Optical and Electronic Properties of Semiconductors, , 4th ed. World Scientific Publishing Co Lamb, W.E., Schlicher, R.R., Scully, M.O., Matter-field interaction in atomic physics and quantum optics (1987) Phys. Rev. A, 36, pp. 2763-2772 Rzazewski, K., Boyd, R.W., Equivalence of interaction Hamiltonians in the eElectric dipole approximation (2004) J. Mod. Opt., 51, pp. 1137-1147 |
| ISSN: | 10944087 |
| DOI: | 10.1364/OE.19.026733 |