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@@ -16,8 +16,6 @@ This approximation is widely adopted (cite) and justified by the fact that,
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Therefore, negligible-polar phonons involved in Raman processes
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have nearly indistinguishable properties from those at the #sym.Gamma point.
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#include "figure-discont.typ"
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gamma 点处 18 个声子的表示。它们的拉曼张量的形状可以确定,但大小无法确定。
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// Representation of these 18 phonons, and the shape of their Raman tensors could be determined in advance.)
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@@ -1,15 +0,0 @@
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#figure(
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image("/画图/声子不连续/embed.svg"),
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caption: [
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(a) Phonon dispersion of 4H-SiC along the A–#sym.Gamma–K high-symmetry path.
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Gray lines represent negligible-polar phonon modes,
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while colored lines indicate strong-polar phonon modes.
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The green, red and blue lines indicate the mode along the z-direction, y-direction and x-direction, respectively.
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Along A-#sym.Gamma path, strong-polar modes along x- and y-directions are degenerated,
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showing as a single purple line.
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(b) Magnified view of the boxed region in (a).
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The orange dashed lines mark the phonon wavevectors involved in Raman scattering
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with incident light along the z- and y-directions.
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],
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placement: none,
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)<figure-discont>
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