Zobrazeno 1 - 10
of 96
pro vyhledávání: '"M.A. Maaref"'
Publikováno v:
Silicon. 11:2471-2474
We report Raman scattering experiments and aluminum (Al) ratio on self-assembled InAlAs quantum dots (QDs) in AlGaAs matrix with different coverage thickness and growth time. The Raman feature assigned to LO phonons in the dots, exhibit a downward fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::986a1bb09b3f1bd01a56425cb75a4193
https://doi.org/10.1007/s12633-018-9987-9
https://doi.org/10.1007/s12633-018-9987-9
Autor:
A. Ben Daly, I. Alexandrou, Valentin Craciun, Bogdan Stefan Vasile, Doina Craciun, S. Lazar, F. Iacomi, M.A. Maaref, Aristide Lemaître
Publikováno v:
Physica B: Condensed Matter. 535:262-267
Quantum dots (QDs), which have particular physical properties due to the three dimensions confinement effect, could be used in many advanced optoelectronic applications. We investigated the properties of InAlAs/AlGaAs QDs grown by molecular beam epit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6095c343889150966f418412f59ad737
https://doi.org/10.1016/j.physb.2017.07.054
https://doi.org/10.1016/j.physb.2017.07.054
Autor:
A. Ben Daly, M.A. Maaref, Valentin Craciun, E. Laura Ursu, Doina Craciun, Aristide Lemaître, Bogdan Stefan Vasile, F. Iacomi
Publikováno v:
Superlattices and Microstructures. 110:1-9
We present the effects of AlGaAs alloy composition on InAlAs quantum dots (QDs) optical and structural properties. Photoluminescence (PL) analysis of samples having a variety of aluminium composition values covering type-II transitions clearly in QDs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8542489630de06c894a625389f48a390
https://doi.org/10.1016/j.spmi.2017.08.017
https://doi.org/10.1016/j.spmi.2017.08.017
Power density and temperature effects on the photoluminescence spectra of InAlAs/GaAlAs quantum dots
Autor:
M.A. Maaref, Elisabeth Galopin, H. Riahi, Frédéric Bernardot, Aristide Lemaître, A. Ben Daly, Thierry Barisien, Christophe Testelin
Publikováno v:
Superlattices and Microstructures
Superlattices and Microstructures, 2017, 104, pp.321-330. ⟨10.1016/j.spmi.2017.02.043⟩
Superlattices and Microstructures, Elsevier, 2017, 104, pp.321-330. ⟨10.1016/j.spmi.2017.02.043⟩
Superlattices and Microstructures, 2017, 104, pp.321-330. ⟨10.1016/j.spmi.2017.02.043⟩
Superlattices and Microstructures, Elsevier, 2017, 104, pp.321-330. ⟨10.1016/j.spmi.2017.02.043⟩
International audience; Photoluminescence (PL) and time-resolved photoluminescence (TRPL) measurement techniques are used to characterize the size and the density of In 1-x Al x As/Ga 0.67 Al 0.33 As quantum dots (QDs) for different QD aluminium comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::464b91e34bff34adf0dd6d4fe7f9e78a
https://doi.org/10.1016/j.spmi.2017.02.043
https://doi.org/10.1016/j.spmi.2017.02.043
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 131:114733
In this study, ellipsometry measurement have been used to investigate optical properties of GaMnAsP/GaAs structure. Within the framework of the three-layer model we have estimated, for the first time, the linear and nonlinear optical parameters of Ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e81519b5ef52581624f657375ac26d4
https://doi.org/10.1016/j.physe.2021.114733
https://doi.org/10.1016/j.physe.2021.114733
Autor:
M.A. Maaref, R. Neffati, F. Bernardot, K. Boujdaria, Aristide Lemaître, S. Ben Radhia, Christophe Testelin, A. Ben Daly, I. Saïdi
Publikováno v:
Superlattices and Microstructures
Superlattices and Microstructures, 2016, 97, pp.529-535. ⟨10.1016/j.spmi.2016.07.030⟩
Superlattices and Microstructures, Elsevier, 2016, 97, pp.529-535. ⟨10.1016/j.spmi.2016.07.030⟩
Superlattices and Microstructures, 2016, 97, pp.529-535. ⟨10.1016/j.spmi.2016.07.030⟩
Superlattices and Microstructures, Elsevier, 2016, 97, pp.529-535. ⟨10.1016/j.spmi.2016.07.030⟩
The effects of the Aluminium concentration on the emission of Al 0.45 In 0.55 As/Al y Ga 1− y As quantum dots (QDs) are investigated by photoluminescence (PL), with the excitation power density as a variable parameter. The influence of a varying ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a660470cd0007c66eae7ef5dbc21e3ab
https://doi.org/10.1016/j.spmi.2016.07.030
https://doi.org/10.1016/j.spmi.2016.07.030
Publikováno v:
Journal of Magnetism and Magnetic Materials
Journal of Magnetism and Magnetic Materials, 2015, 395, pp.340-344. ⟨10.1016/j.jmmm.2015.07.090⟩
Journal of Magnetism and Magnetic Materials, Elsevier, 2015, 395, pp.340-344. ⟨10.1016/j.jmmm.2015.07.090⟩
Journal of Magnetism and Magnetic Materials, 2015, 395, pp.340-344. ⟨10.1016/j.jmmm.2015.07.090⟩
Journal of Magnetism and Magnetic Materials, Elsevier, 2015, 395, pp.340-344. ⟨10.1016/j.jmmm.2015.07.090⟩
International audience; A trilayer of the ferromagnetic semiconductor GaMnAs, a SiO 2 buffer layer and a piezoelectric ZnO layer, is investigated in view of its use in device implementation to study surface acoustic wave-assisted magnetization switch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad4727504341f2cdd9bbc84977c0a243
https://doi.org/10.1016/j.jmmm.2015.07.090
https://doi.org/10.1016/j.jmmm.2015.07.090
Publikováno v:
Silicon
Silicon, Springer, 2018, 10 (1), pp.147-151. ⟨10.1007/s12633-015-9395-3⟩
Silicon, Springer, 2018, 10 (1), pp.147-151. ⟨10.1007/s12633-015-9395-3⟩
The quantum dot size dependence of spin lifetimes and fine structure are studied by polarization-resolved photoluminescence experiments on InAlAs self-assembled quantum dots. Hanle measurements reveal that the dots dimensions influence the scaled spi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::20d0f2e06d868d5c358eb68bf23658ca
https://hal.archives-ouvertes.fr/hal-02390111
https://hal.archives-ouvertes.fr/hal-02390111
Autor:
Jorge M. Garcia, Christophe Testelin, Juan P. Martínez-Pastor, R. Naouari, M.A. Maaref, Daniel Granados, W. Ouerghi, F. Bernardot
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
instname
Silicon
Silicon, Springer, 2017, 9 (5), pp.689-693. ⟨10.1007/s12633-015-9388-2⟩
Silicon, 2017, 9 (5), pp.689-693. ⟨10.1007/s12633-015-9388-2⟩
instname
Silicon
Silicon, Springer, 2017, 9 (5), pp.689-693. ⟨10.1007/s12633-015-9388-2⟩
Silicon, 2017, 9 (5), pp.689-693. ⟨10.1007/s12633-015-9388-2⟩
Magneto-photoluminescence spectroscopy measurements were performed on self-assembled InGaAs/GaAs quantum rings. We report exciton exchange energy as a function of interband emission energy; we measure a decrease from 163 μ e V to 43 μ e V in the ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09619b8f0de960fa6dd1ab9f18560c81
http://hdl.handle.net/10261/181588
http://hdl.handle.net/10261/181588
Autor:
Catherine Gourdon, M. Yahyaoui, K. Boujdaria, Laura Thevenard, H. Riahi, M.A. Maaref, Aristide Lemaître
Publikováno v:
Journal of Applied Physics
Journal of Applied Physics, 2017, 121 (12), pp.125702. ⟨10.1063/1.4979205⟩
Journal of Applied Physics, American Institute of Physics, 2017, 121 (12), pp.125702. ⟨10.1063/1.4979205⟩
Journal of Applied Physics, 2017, 121 (12), pp.125702. ⟨10.1063/1.4979205⟩
Journal of Applied Physics, American Institute of Physics, 2017, 121 (12), pp.125702. ⟨10.1063/1.4979205⟩
International audience; We present a theoretical and experimental study of the magneto-optical properties of thin (Ga,Mn) (As,P) layers on GaAs substrates with varying phosphorus fractions. Using a 40-band k.p model as well as an antiferromagnetic (s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9167ad46f608a4a5f613e9b8538081d
https://hal.science/hal-01522882/document
https://hal.science/hal-01522882/document