Artículo
Romano, C.L.; Tamborenea, P.I.; Ulloa, S.E. "Spin-orbit effects on two-electron states in nanowhisker double quantum dots" (2009) Physica E: Low-Dimensional Systems and Nanostructures. 41(8):1577-1582
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Abstract:
We investigate theoretically the combined effects of the electron-electron and the Rashba spin-orbit interactions on two electrons confined in quasi-one-dimensional semiconductor double quantum dots. We study both InSb-based structures, which are of interest due to their strong spin-orbit coupling, and also InAs-based systems, which have been recently studied experimentally. We calculate the two-electron wave functions in the effective-mass approximation and explore the interplay between the two interactions on the energy levels and the spin of the states. The energy spectrum as a function of an applied magnetic field shows crossings and anticrossings between triplet and singlet states, associated with level mixing induced by the spin-orbit coupling. We find that the fields at which these crossings occur can be naturally controlled by the interdot barrier width, which controls the exchange integral in the structure. © 2009 Elsevier B.V. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Spin-orbit effects on two-electron states in nanowhisker double quantum dots |
| Autor: | Romano, C.L.; Tamborenea, P.I.; Ulloa, S.E. |
| Filiación: | Department of Physics J.J. Giambiagi, University of Buenos Aires, Ciudad Universitaria, Pabellon I, C1428EHA Ciudad Autonoma de Buenos Aires, Argentina Department of Physics and Astronomy, Nanoscale and Quantum Phenomena Institute, Ohio University, Athens, OH 45701-2979, United States |
| Palabras clave: | Electron interactions; Nanowhisker; Quantum dots; Rashba effect; Spin-orbit coupling; Anticrossings; Applied magnetic fields; Barrier widths; Combined effect; Double quantum dots; Effective mass approximation; Electron interactions; Electron state; Electron wave functions; Energy level; Energy spectra; Exchange integrals; InAs; Quantum dots; Quasi-one-dimensional; Rashba effect; Rashba spin orbit interaction; Singlet state; Spin-orbit coupling; Spin-orbit couplings; Spin-orbit effects; Crystal whiskers; Current voltage characteristics; Electron energy levels; Electrons; Indium arsenide; Lithium compounds; Magnetic fields; Nanowhiskers; Orbits; Spin dynamics; Semiconductor quantum dots |
| Año: | 2009 |
| Volumen: | 41 |
| Número: | 8 |
| Página de inicio: | 1577 |
| Página de fin: | 1582 |
| DOI: | http://dx.doi.org/10.1016/j.physe.2009.04.039 |
| Título revista: | Physica E: Low-Dimensional Systems and Nanostructures |
| Título revista abreviado: | Phys E |
| ISSN: | 13869477 |
| CODEN: | PELNF |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13869477_v41_n8_p1577_Romano |
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Citas:
---------- APA ----------
Romano, C.L., Tamborenea, P.I. & Ulloa, S.E. (2009) . Spin-orbit effects on two-electron states in nanowhisker double quantum dots. Physica E: Low-Dimensional Systems and Nanostructures, 41(8), 1577-1582.http://dx.doi.org/10.1016/j.physe.2009.04.039
---------- CHICAGO ----------
Romano, C.L., Tamborenea, P.I., Ulloa, S.E. "Spin-orbit effects on two-electron states in nanowhisker double quantum dots" . Physica E: Low-Dimensional Systems and Nanostructures 41, no. 8 (2009) : 1577-1582.http://dx.doi.org/10.1016/j.physe.2009.04.039
---------- MLA ----------
Romano, C.L., Tamborenea, P.I., Ulloa, S.E. "Spin-orbit effects on two-electron states in nanowhisker double quantum dots" . Physica E: Low-Dimensional Systems and Nanostructures, vol. 41, no. 8, 2009, pp. 1577-1582.http://dx.doi.org/10.1016/j.physe.2009.04.039
---------- VANCOUVER ----------
Romano, C.L., Tamborenea, P.I., Ulloa, S.E. Spin-orbit effects on two-electron states in nanowhisker double quantum dots. Phys E. 2009;41(8):1577-1582.http://dx.doi.org/10.1016/j.physe.2009.04.039
