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Abstract:

In this work we calculate the spin-flip transition rates, considering the phonon modulation of the spin-orbit interaction. For this purpose will use the spin-phonon interaction Hamiltonian proposed by Pavlov and Firsov. We compare the contributions of the electron-phonon deformation potential (DP) and piezoelectric (PE) coupling to the spin relaxation. We reveal the importance of an appropriate description of the electron Landé g-factor in the calculation of the rates. Our results demonstrate that, for narrow-gap materials, the DP interaction becomes the dominant one. This behavior is not observed in wide or intermediate gap semiconductors, where the PE coupling, in general, governs the relaxation processes. © 2009 Springer Science+Business Media, LLC.

Registro:

Documento: Artículo
Título:Electron spin relaxation due to phonon modulation of the Rashba interaction in quantum dots
Autor:Alcalde, A.M.; Sanz, L.; Romano, C.; Marques, G.E.
Filiación:Instituto de Física, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
Departamento de Física, Universidad de Buenos Aires, Buenos Aires, Argentina
Departamento de Física, Universidade Federal de São Carlos, São Carlos, SP, Brazil
Palabras clave:Quantum dots; Spin relaxation; Deformation potential; Electron phonon; Electron-spin relaxation; G factors; Phonon modulation; Quantum Dot; Spin flip transitions; Spin orbit interactions; Spin relaxation; Spin-phonon interactions; Dynamic positioning; Electrons; Percolation (solid state); Phonons; Semiconductor quantum dots; Spin dynamics
Año:2010
Volumen:23
Número:1
Página de inicio:175
Página de fin:177
DOI: http://dx.doi.org/10.1007/s10948-009-0552-z
Título revista:Journal of Superconductivity and Novel Magnetism
Título revista abreviado:J Supercond Novel Magn
ISSN:15571939
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15571939_v23_n1_p175_Alcalde

Referencias:

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Citas:

---------- APA ----------
Alcalde, A.M., Sanz, L., Romano, C. & Marques, G.E. (2010) . Electron spin relaxation due to phonon modulation of the Rashba interaction in quantum dots. Journal of Superconductivity and Novel Magnetism, 23(1), 175-177.
http://dx.doi.org/10.1007/s10948-009-0552-z
---------- CHICAGO ----------
Alcalde, A.M., Sanz, L., Romano, C., Marques, G.E. "Electron spin relaxation due to phonon modulation of the Rashba interaction in quantum dots" . Journal of Superconductivity and Novel Magnetism 23, no. 1 (2010) : 175-177.
http://dx.doi.org/10.1007/s10948-009-0552-z
---------- MLA ----------
Alcalde, A.M., Sanz, L., Romano, C., Marques, G.E. "Electron spin relaxation due to phonon modulation of the Rashba interaction in quantum dots" . Journal of Superconductivity and Novel Magnetism, vol. 23, no. 1, 2010, pp. 175-177.
http://dx.doi.org/10.1007/s10948-009-0552-z
---------- VANCOUVER ----------
Alcalde, A.M., Sanz, L., Romano, C., Marques, G.E. Electron spin relaxation due to phonon modulation of the Rashba interaction in quantum dots. J Supercond Novel Magn. 2010;23(1):175-177.
http://dx.doi.org/10.1007/s10948-009-0552-z