Temperature-dependent two-dimensional plasmons at clean and hydrogenated Ge(001) surfaces

Dielectric function of degenerateInSb: Beyond the hydrodynamic model

“…[1][2][3][4][5] The hydrodynamic model has been widely used because of its relative simplicity. More detailed treatments able to explicitly incorporate Landau damping and band structure include the semiclassical Boltzmann transport model and the random phase approximation ͑RPA͒ in the Lindhard model.…”

“…7, 8, and 10͒ and other materials. 4,5,14,15 For plasma dielectric terms not explicitly incorporating Landau damping, the plasmon damping ␥ ͑and only ␥͒ is allowed to vary with electron energy. 8,14,15 The plasma term in the hydrodynamic dielectric function is…”