PHASE COHERENCE OF 2D EXCITONS IN GaAs-AlGaAs QUANTUM WELLS

Hexagonal boron nitride is a promising substrate of graphene due to the lattice- match, the low surface roughness or the low density of charge traps.. Raman spectroscopy is a

Abstract.- The energy dependence of the electron relaxation time for electron-phonon scattering is included in the calculation of the electrical resistivity of the polyvalent,

Bandoffset and exciton binding energies are studied in (100) oriented CdTe/(Cd,Mn)Te multiple quantum wells by photoluminescence excitation spectroscopy in external

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We may note from the figures that for a given concentration x the values of the exciton binding energies have the same qualitative behavior as those previously obtained for

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The light and heavy hole masses, the relative band alignments of GaAs and AlGaAs and the quantum well width were treated as fitting parameters.. Figure 2 shows

Un ´etat de l’art des cavit´es semi-conductrices et des boˆıtes quantiques au d´ebut de cette th`ese permet de choisir le syst`eme semi-conducteur le plus prometteur