کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1543973 | 1512872 | 2016 | 8 صفحه PDF | دانلود رایگان |
• We study surface and interface phonon-polaritons in freestanding QWW systems.
• Polariton modes located in the three forbidden bands of bulk phonon-polaritons.
• Polariton properties depend on the geometric structure and composition of the TMC.
• One or two mode behaviors of surface and interface phonon-polaritons are seen.
The surface and interface phonon-polaritons in freestanding rectangular quantum well wire systems consisting of polar ternary mixed crystals are investigated in the modified random-element-isodisplacement model and the Born–Huang approximation, based on the Maxwell's equations with the boundary conditions. The numerical results of the surface and interface phonon-polariton frequencies as functions of the wave-vector, geometric structure, and the composition of the ternary mixed crystals in GaAs/AlxGa1−xAs and ZnxCd1−xSe/ZnSe quantum well wire systems are obtained and discussed. It is shown that there are 10 and 8 branches of surface and interface phonon-polaritons in the two quantum well wire systems respectively. The effects of the “two-mode” and “one-mode” behaviors of the ternary mixed crystals on the surface and interface phonon-polariton modes are shown in the dispersion curves.
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 77, March 2016, Pages 114–121