#figure(
  image("/画图/声子不连续/embed.svg"),
  caption: [
    (a) Phonon dispersion of 4H-SiC along the A–#sym.Gamma–K high-symmetry path.
      Gray lines represent negligible-polar phonon modes,
        while colored lines indicate strong-polar phonon modes.
      The green, red and blue lines indicate the mode along the z-direction, y-direction and x-direction, respectively.
      Along A-#sym.Gamma path, strong-polar modes along x- and y-directions are degenerated,
        showing as a single purple line.
    (b) Magnified view of the boxed region in (a).
      The orange dashed lines mark the phonon wavevectors involved in Raman scattering
        with incident light along the z- and y-directions.
  ],
  placement: none,
)<figure-discont>
