Dielectric Function of a Quantum-Confined Thin Film with a Modified Pöschel–Teller Potential
Keywords:quantum-confined thin film, quantum confinement effects, dielectric function, modified P¨oschel–Teller potential, matrix element of the scattering potential, polarization operator
The spatial and time dispersions of the dielectric permittivity of an electron gas in quasi-two-dimensional quantum nanostructures are studied. The screening of the charge-carrier scattering potential in a quantum-confined film with a modified P¨oschel–Teller potential is considered for the first time. Analytical expressions for the dielectric permittivity are obtained.
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