Figure 6From: Collective excitations on a surface of topological insulatorScattering form-factors of spin-plasmon. Scattering form-factors of spin-plasmon. Polar graphs of the squared modulus of electric |Φe(q, θ)|2 and components Φ m ∥ ( q , θ ) 2 , Φ m ⊥ ( q , θ ) 2 of magnetic form-factor of spin-plasmon with the momentum q = 0.6pF at rs = 0.09 (a) and rs = 8.8 (b).Back to article page