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2025-07-04 11:08:31 +08:00
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Gamma 点的声子被用于近似参与拉曼散射的弱极性声子,无论入射配置。
这个近似是因为这些声子的色散曲线在 Gamma 点附近连续且非常接近 Gamma 点,并且已经被广泛使用。
Phonons at the #sym.Gamma point were used to approximate negligible-polar phonons,
regardless of the wavevector of the incident and scattered light.
Phonons at the #sym.Gamma point were employed to approximate negligible-polar phonons for all incidence configurations.
This approximation is based on the fact that
the dispersion of these phonons is continuous and very close to the #sym.Gamma point,
and has been widely adopted in the literature @_n-sic_2008.