Conferencia

Cygorek, M.; Ungar, F.; Tamborenea, P.I.; Axt, V.M.; Wegrowe J.-E.; Drouhin H.-J.; Razeghi M.; The Society of Photo-Optical Instrumentation Engineers (SPIE) "Dependence of quantum kinetic effects in the spin dynamics of diluted magnetic semiconductors on the excitation conditions" (2016) Spintronics IX. 9931
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Abstract:

Non-Markovian quantum kinetic features, that cannot be captured by rate equations, have been predicted theoretically in the spin dynamics in diluted magnetic semiconductors excited with a circularly polarized laser. In order to identify situations which are most promising for detecting the genuine quantum kinetic effects in future experiments, we study numerically the strength of these effects for a number of different excitation conditions. In particular, we show that laser pulse durations of the order of the spin-transfer rate or longer are well suited for studying the non-Markovian effects. Furthermore, in the presence of an external magnetic field, the quantum kinetic theory predicts a significantly different stationary value for the carrier spin polarization than Markovian rate equations, which can be attributed to the build-up of strong carrier-impurity correlations. © 2016 SPIE.

Registro:

Documento: Conferencia
Título:Dependence of quantum kinetic effects in the spin dynamics of diluted magnetic semiconductors on the excitation conditions
Autor:Cygorek, M.; Ungar, F.; Tamborenea, P.I.; Axt, V.M.; Wegrowe J.-E.; Drouhin H.-J.; Razeghi M.; The Society of Photo-Optical Instrumentation Engineers (SPIE)
Filiación:Theoretische Physik III, Universität Bayreuth, Bayreuth, 95440, Germany
Departamento de Fisica and IFIBA, FCEN, Universidad de Buenos Aires, Ciudad Universitaria, Pabellon I, Ciudad de Buenos Aires, 1428, Argentina
Palabras clave:Diluted magnetic semiconductors; Optical excitation; Quantum kinetics; Spin dynamics; Spintronics; Diluted magnetic semiconductors; Kinetic theory; Kinetics; Magnetic semiconductors; Magnetism; Magnetoelectronics; Photoexcitation; Semiconductor lasers; Spin polarization; Carrier spin polarization; Circularly polarized lasers; Excitation conditions; External magnetic field; Laser pulse duration; Non-Markovian effects; Quantum kinetic; Quantum-kinetic theory; Spin dynamics
Año:2016
Volumen:9931
DOI: http://dx.doi.org/10.1117/12.2235914
Título revista:Spintronics IX
Título revista abreviado:Proc SPIE Int Soc Opt Eng
ISSN:0277786X
CODEN:PSISD
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0277786X_v9931_n_p_Cygorek

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Citas:

---------- APA ----------
Cygorek, M., Ungar, F., Tamborenea, P.I., Axt, V.M., Wegrowe J.-E., Drouhin H.-J., Razeghi M.,..., The Society of Photo-Optical Instrumentation Engineers (SPIE) (2016) . Dependence of quantum kinetic effects in the spin dynamics of diluted magnetic semiconductors on the excitation conditions. Spintronics IX, 9931.
http://dx.doi.org/10.1117/12.2235914
---------- CHICAGO ----------
Cygorek, M., Ungar, F., Tamborenea, P.I., Axt, V.M., Wegrowe J.-E., Drouhin H.-J., et al. "Dependence of quantum kinetic effects in the spin dynamics of diluted magnetic semiconductors on the excitation conditions" . Spintronics IX 9931 (2016).
http://dx.doi.org/10.1117/12.2235914
---------- MLA ----------
Cygorek, M., Ungar, F., Tamborenea, P.I., Axt, V.M., Wegrowe J.-E., Drouhin H.-J., et al. "Dependence of quantum kinetic effects in the spin dynamics of diluted magnetic semiconductors on the excitation conditions" . Spintronics IX, vol. 9931, 2016.
http://dx.doi.org/10.1117/12.2235914
---------- VANCOUVER ----------
Cygorek, M., Ungar, F., Tamborenea, P.I., Axt, V.M., Wegrowe J.-E., Drouhin H.-J., et al. Dependence of quantum kinetic effects in the spin dynamics of diluted magnetic semiconductors on the excitation conditions. Proc SPIE Int Soc Opt Eng. 2016;9931.
http://dx.doi.org/10.1117/12.2235914