374 citations
- Centre National de la Recherche ScientifiqueFR23 papers
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7 papers · 1 filter
Potential-inserted quantum well design for quantum cascade terahertz lasers
R. Benchamekh, J. -M. Jancu, P. Voisin
We report on a new design of terahertz quantum cascade laser based on a single, potential-inserted quantum well active region. The quantum well properties are engineered through si…
Optical properties of potential-inserted quantum wells in the near infrared and Terahertz ranges
F. Raouafi, R. Samti, R. Benchamekh +4
We propose an engineering of the optical properties of GaAs/AlGaAs quantum wells using AlAs and InAs monolayer insertions. A quantitative study of the effects of the monolayer posi…
Intrinsic interface states in InAs-AlSb heterostructures
F. Raouafi, R. Benchamekh, M. O. Nestoklon +2
We examine the possibility of intrinsic interface states bound to the plane of In-Sb chemical bonds at InAs/AlSb interfaces. Careful parameterization of the bulk materials in the f…
Thermal conductivity of hemp concretes: Variation with formulation, density and water content
Florence Collet, Sylvie Prétot
This study investigates the effect of formulation, density and water content on the thermal conductivity of hemp concretes. The investigations are based on experimental measurement…
Tight-binding calculations of image charge effects in colloidal nanoscale platelets of CdSe
R. Benchamekh, N. A. Gippius, J. Even +6
CdSe nanoplatelets show perfectly quantized thicknesses of few monolayers. They present a situation of extreme, yet well defined quantum confinement. Due to large dielectric contra…
Microscopic Electronic Wavefunction and interactions between quasi particles in Empirical Tight-Binding Theory
R. Benchamekh, F. Raouafi, J. Even +3
A procedure to obtain single-electron wavefunctions within the tight-binding formalism is proposed. It is based on linear combinations of Slater-type orbitals whose screening coeff…