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@@ -46,6 +46,9 @@
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// 标题序号
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#set heading(numbering: "1.")
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// 增加标题的间距
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#show heading: set block(below: 1em)
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#include "introduction.typ"
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#include "method/default.typ"
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#include "result/default.typ"
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@@ -2,15 +2,23 @@
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总共有 21 个声子模式。我们把它分成 18 个极性很小的和 3 个极性很强的两类。
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// There are 21 phonons in total.
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// We classified them into two categories: 18 negligible-polar phonons and 3 strong-polar phonons.
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The phonons involved in Raman scattering are located in reciprocal space around the #sym.Gamma point,
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and the exact positions are determined by the wavevectors of the incident and scattered light.
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At each such position, there are 21 phonon modes (degenerate modes are counted as their multiplicity).
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We classify these 21 phonons into two categories based on their polarities.
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The 18 of 21 phonons are classified into negligible-polar phonons (i.e., phonons with zero or very weak polarity),
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对应于不同拉曼入射配置(正入射、掠入射、边入射)的声子位于倒空间中的不同位置。
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它们都位于 Gamma 点附近,与 Gamma 点的距离由入射光波长决定,而与 Gamma 点的相对位置则由入射方向决定。
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对于每一个 Gamma 附近的点,都有 21 个声子模式(简并模式按简并数计)。
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我们将这 21 个声子模式分为两类:18 个极性可以忽略的声子模式(即极性为零或非常弱的声子),在拉曼散射过程中它们的电极性造成的效应可以忽略;
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和 3 个强极性声子模式,在拉曼光谱中电极性效应是可观测的。
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Phonons involved in different Raman incidence configurations (normal, grazing, and edge incidence)
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are located at different positions in reciprocal space,
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all of which are near the #sym.Gamma point,
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with the distance from the #sym.Gamma point determined by the wavelength of the incident light,
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and the relative position to the #sym.Gamma point determined by the direction of incidence.
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For each such position around the #sym.Gamma point,
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there are 21 phonon modes (degenerate modes are counted according to their multiplicity).
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We classify these 21 phonon modes into two categories:
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18 negligible-polar phonons (i.e., phonons with zero or very weak electrical polarity),
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for which the effect of polarity can be ignored in the Raman scattering process;
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and the other three phonons are strong-polar phonons,
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and the other three strong-polar phonons,
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where the polarity gives rise to observable effects in the Raman spectra.
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这个分类是有意义的。从微观上讲,它也和原子的振动方向有关。
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@@ -10,10 +10,12 @@
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- [x] 中文
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- [x] 英文
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- [x] 调整语言
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- [x] 拉曼实验
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- [x] 中文
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- [x] 英文
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- [x] 调整语言
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- [/] 拉曼实验
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- [x] 仪器设置,三个入射配置
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- [x] 中文
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- [x] 英文
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- [x] 调整语言
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- [ ] 坐标轴定义
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- [x] 模型总述
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- [x] 无缺陷和点缺陷的模型大小、结构
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- [x] 中文
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@@ -30,10 +32,17 @@
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- [ ] 填充数据和引用
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- [/] results
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- [x] 总述
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- [/] 无缺陷
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- [ ] 总述
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- [ ] Gamma 附近有 21 个模式,我们将它们分为强极性和弱极性
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- [ ] 中文
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- [ ] 英文
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- [ ] 调整语言
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- [ ] 这样分类是有意义的
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- [ ] 杂项
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- [ ] N#sub[C]C#sub[Si] 有什么好处?
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- [ ] 是否有其它需要研究的点缺陷?
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- [ ] 实验
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- [ ] 实验
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- [ ] 测试不同片子的背面 LOPC,确认它们的掺杂是否相同
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