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Dependences of angle θ (a, d), PSD of the reflected waves (b, e) and corresponding energy reflection coefficients (c, f) on parameter for various PCMs (amorphous and crystalline GST 225, VO2) as the substrate material. The values of parameters are: d2 = 5 nm (a–c), 50 nm (d–f). The values of parameters for all the graphs are: ψ = 0, d1,3,4 = 0, λ = 650 nm, , μ2 = 1. The horizontal lines in fig. f characterize energy reflection coefficients for the substrates corresponding to the data in c, f. The black horizontal dashed line in figs. b, e corresponds to the condition Δϕ = 0. Parameter is used as the abscissa axis for all the graphs.
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