Zobrazeno 1 - 10
of 197
pro vyhledávání: '"K. Saminadayar"'
Publikováno v:
Acta Physica Polonica A. 106:287-298
Absorption spectra have been measured for a 10 nm CdTe(0.3%Mn) quantum well with electron concentration ne variable up to 1.5×10 cm−2. Following recent theory appropriate to low ne, here ≈ 0.1/πaB, the spectra are interpreted in a “strong exc
Autor:
E. Anastassakis, K. Saminadayar, Evangelia Sarantopoulou, Serge Tatarenko, N. T. Pelekanos, Alexandre Arnoult, Yannis S. Raptis, V. C. Stergiou
Publikováno v:
High Pressure Research. 18:101-107
Single and multiple quantum wells (QWs) of CdTe/Cd1−xZnxTe, of different composition (x), grown on a Cd1−xZnxTe (001) substrate are studied by Raman spectroscopy at low temperature, under resonance conditions. Two of the three phonon deformation
Autor:
Serge Tatarenko, K. Saminadayar, C. Bourgognon, V. Huard, R. T. Cox, Alexandre Arnoult, Joel Cibert, Marek Potemski
Publikováno v:
physica status solidi (a). 178:95-99
Autor:
Joel Cibert, K. Saminadayar, V. Huard, C. Bourgognon, Serge Tatarenko, R.T. Cox, Alexandre Arnoult
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 6:161-164
The evolution of the optical properties as a function of 2D electron concentration n e is studied using CdTe quantum wells. The trion absorption peak evolves to the Fermi edge singularity (FES) as the exciton peak progressively disappears. The splitt
Autor:
A. Wasiela, V. Huard, Alexandre Arnoult, K. Saminadayar, Joel Cibert, Serge Tatarenko, C. Grattepain, C. Bourgognon, David Ferrand
Publikováno v:
Journal of Crystal Growth. :715-718
The study of the interdiffusion in CdTe–CdZnMgTe multiquantum wells p-type doped with nitrogen reveals that the intermixing leading to the destruction of the quantum wells occurs essentially between the Cd and Mg atoms, while the Zn atoms stay in t
Publikováno v:
The European Physical Journal B. 8:293-300
We study weak localization and electron interaction in CdTe:In by low temperature magnetoconductance experiments to quantify the phase breaking length and the importance of interactions in CdTe. Then we study superconducting contacts to CdTe:In by tr
Optical measurements of spin polarization in a 2D electron system with g-factor tunable through zero
Autor:
V. Huard, A. Wasiela, R. T. Cox, S. Lovisa, Serge Tatarenko, K. Saminadayar, Alexandre Arnoult, Joel Cibert, Marek Potemski
Publikováno v:
Physica B: Condensed Matter. :136-140
The spin polarization of a 2D electron gas is studied for values of the Landau filling factor ν around unity in a CdTe (0.22% Mn) quantum well with g-factor tunable through zero. Anomalies in the circular polarization of the trion absorption for fil
Publikováno v:
Superlattices and Microstructures. 24:249-253
A magneto-optical study of ≈350 A wide CdTe/CdZnTe quantum wells containing an electron gas is presented. For undoped structures the absorption spectra show lines associated with centre-of-mass quantization of the exciton in the wide CdTe well. Mod
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 2:256-260
In the emission spectra of CdTe quantum wells with a low electron concentration n e we observe two shakeup lines associated with the recombination of the charged exciton X − where one of the two electrons of X − is promoted to an upper Landau lev
Publikováno v:
Journal of Crystal Growth. :810-813
Modulation-doped single quantum wells inserted in a Schottky diode have been fabricated to allow varying the electron density of a two-dimensional electron gas ( n e ) in the CdTe quantum well by applying a reverse bias voltage. The optical transitio