From 0275960571f2b8cc4203479df9b8daa77a5dbf74 Mon Sep 17 00:00:00 2001 From: chn Date: Mon, 27 Oct 2025 19:05:14 +0800 Subject: [PATCH] =?UTF-8?q?=E6=AD=A3=E5=85=A5=E5=B0=84=E4=BE=A7=E5=85=A5?= =?UTF-8?q?=E5=B0=84=E7=A7=BB=E5=8A=A8?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- paper/method/experiment/default.typ | 24 +++++++++++++- .../experiment}/figure-e1.typ | 0 paper/result/perfect/non-polar/default.typ | 33 +++++++------------ .../perfect/non-polar/figure-nopo-diff.typ | 9 ++--- 画图/E1减小/plot.ipynb | 4 +-- 画图/弱极性不同方向偏移/plot.ipynb | 4 +-- 画图/弱极性不同方向偏移/拉曼.svg | 4 +-- .../拉曼结果拟合/251019/2/join_and_move.ipynb | 3 ++ 画图/拉曼结果拟合/README.md | 2 +- 9 files changed, 46 insertions(+), 37 deletions(-) rename paper/{result/perfect/non-polar => method/experiment}/figure-e1.typ (100%) create mode 100644 画图/拉曼结果拟合/251019/2/join_and_move.ipynb diff --git a/paper/method/experiment/default.typ b/paper/method/experiment/default.typ index 4860836..fb1d1e9 100644 --- a/paper/method/experiment/default.typ +++ b/paper/method/experiment/default.typ @@ -57,4 +57,26 @@ todo 散射光路对不同偏振的响应不同，因此需要乘以一个系数。 -探索：为什么对于A1的拟合，结果会差两倍？ \ No newline at end of file +探索：为什么对于A1的拟合，结果会差两倍？ + +E#sub[1]-1 模式在正入射拉曼实验中被观察到尽管在理论上是不允许的，这被认为是因为入射光并非完全沿c轴入射。 +如图所示，由于非零的数值孔径，激光汇聚到样品上时存在一个锥形角度（不完全平行于c轴），使得 E#sub[1]-1 模式在正入射中总是可见的。 +由于衬底斜切（沿着x方向），对于 zxxz 和 zxyz 配置，入射光或散射光的偏振将具有更多的 z 分量，从而使 E#sub[1]-1 模式的强度增加。 +通过略微倾斜衬底可以补偿斜切导致的效应，如附图所示。 +同时，此对比也可以验证衬底斜切的方向。 + +Two effects beyond ideal theoretical prediction were observed experimentally, + including minor but observable peak shifts of negligible-polar phonons between different incidence configurations, + and the observability of the E#sub[1]-1 mode in normal incidence Raman experiments. +The peak shifts were considered caused by the non-zero wavevector lengths of phonons. +In our calculations, compared to normal incidence, + the E#sub[2]-3 mode's frequency remained nearly unchanged, + while the E#sub[2]-1, E#sub[2]-2, A#sub[1]-1 modes exhibited minor but observable shifts. +The experimental results were in good agreement with our calculations, as shown in figure and table. +The visibility of the E#sub[1]-1 mode in normal incidence Raman experiments were attributed to the fact that + the incident light was not perfectly aligned along the z-axis, + due to the substrate's slight tilt and the converging angle of the confocal setup. +This was confirmed by the results under different polarization configurations and different tilt angles, + as shown in figure. + +#include "figure-e1.typ" diff --git a/paper/result/perfect/non-polar/figure-e1.typ b/paper/method/experiment/figure-e1.typ similarity index 100% rename from paper/result/perfect/non-polar/figure-e1.typ rename to paper/method/experiment/figure-e1.typ diff --git a/paper/result/perfect/non-polar/default.typ b/paper/result/perfect/non-polar/default.typ index 135d2be..87cba1b 100644 --- a/paper/result/perfect/non-polar/default.typ +++ b/paper/result/perfect/non-polar/default.typ @@ -87,31 +87,20 @@ Our experiments reported the E#sub[1]-2 peak for the first time, #include "figure-raman.typ" -E#sub[1]-1 模式在正入射中可见。 +不同入射方向下有微小移动。 -E#sub[1]-1 模式在正入射拉曼实验中被观察到尽管在理论上是不允许的，这被认为是因为入射光并非完全沿c轴入射。 -如图所示，由于非零的数值孔径，激光汇聚到样品上时存在一个锥形角度（不完全平行于c轴），使得 E#sub[1]-1 模式在正入射中总是可见的。 -由于衬底斜切（沿着x方向），对于 zxxz 和 zxyz 配置，入射光或散射光的偏振将具有更多的 z 分量，从而使 E#sub[1]-1 模式的强度增加。 -通过略微倾斜衬底可以补偿斜切导致的效应，如附图所示。 - -不同入射方向下弱极性峰位的微小移动被观察到，这是由于非零波矢长度的声子引起的。 +为了检验我们实验和计算的准确性，我们测量和计算了不同入射方向下弱极性峰位的微小移动。 在我们的计算中，从正入射到肩入射，E2-3的峰位几乎不变，E2-1与A1-1会有可观测的蓝移，同时E2-2会有可观测的红移。 实验结果与计算结果基本一致，如图如表所示。 -Some effects absent in previous theory were observed experimentally, - including minor but observable peak shifts of negligible-polar phonons between different incidence configurations, - and the observability of the E#sub[1]-1 mode in normal incidence Raman experiments. -The peak shifts were considered caused by the non-zero wavevector lengths of phonons. -In our calculations, compared to normal incidence, - the E#sub[2]-3 mode's frequency remained nearly unchanged, - while the E#sub[2]-1, E#sub[2]-2, A#sub[1]-1 modes exhibited minor but observable shifts. -The experimental results were in good agreement with our calculations, as shown in figure and table. -The visibility of the E#sub[1]-1 mode in normal incidence Raman experiments were attributed to the fact that - the incident light was not perfectly aligned along the z-axis, - due to the substrate's slight tilt and the converging angle of the confocal setup. -This was confirmed by the results under different polarization configurations and different tilt angles, - as shown in figure. +To further validate the accuracy of our experiments and calculations, + we measured and calculated the peak shifts of negligible-polar phonons + under different incidence configurations. +In our calculations, comparing with normal incidence, + the E#sub[2]-3 peek remained nearly unchanged under edge incidence (only shifted about 0.004 cm#super[-1]), + thus we use it as a reference to calibrate other peak positions. +The E#sub[2]-1, E#sub[2]-2, and A#sub[1]-1 modes exhibited observable shifts, + and the experimental results were in good agreement with our calculations, as shown in figure and table. +Our results further confirmed the accuracy of both our experiments and calculations. #include "figure-nopo-diff.typ" - -#include "figure-e1.typ" diff --git a/paper/result/perfect/non-polar/figure-nopo-diff.typ b/paper/result/perfect/non-polar/figure-nopo-diff.typ index 2537041..d7cf572 100644 --- a/paper/result/perfect/non-polar/figure-nopo-diff.typ +++ b/paper/result/perfect/non-polar/figure-nopo-diff.typ @@ -1,12 +1,7 @@ #figure( - image("/画图/弱极性不同方向偏移/embed.svg"), + image("/画图/弱极性不同方向偏移/拉曼.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. - (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. + Frequency shifts of negligible-polar phonon modes under different incidence configurations. ], placement: none ) diff --git a/画图/E1减小/plot.ipynb b/画图/E1减小/plot.ipynb index 5b2d3d5..c2b105f 100644 --- a/画图/E1减小/plot.ipynb +++ b/画图/E1减小/plot.ipynb @@ -1,3 +1,3 @@ version https://git-lfs.github.com/spec/v1 -oid sha256:b863142b96eec367b0aedff17c334f6924207630aa567da50f87bffe3bff887e -size 282402 +oid sha256:2833c43f2abe003be1989844978cb6c63348c0049531f57c7c02b15f099597f7 +size 108787 diff --git a/画图/弱极性不同方向偏移/plot.ipynb b/画图/弱极性不同方向偏移/plot.ipynb index 493edbd..c5dc36f 100644 --- a/画图/弱极性不同方向偏移/plot.ipynb +++ b/画图/弱极性不同方向偏移/plot.ipynb @@ -1,3 +1,3 @@ version https://git-lfs.github.com/spec/v1 -oid sha256:924f57ff3e53bb56687c83984f18f60b1d72983bb4745ffe656a1dcbef1f5019 -size 856446 +oid sha256:4eab589e857ff45e428d9ad66010d61a7d8c19bbed5f52035168abfaef5b35a0 +size 458864 diff --git a/画图/弱极性不同方向偏移/拉曼.svg b/画图/弱极性不同方向偏移/拉曼.svg index 133ff06..5355587 100644 --- a/画图/弱极性不同方向偏移/拉曼.svg +++ b/画图/弱极性不同方向偏移/拉曼.svg @@ -1,3 +1,3 @@ version https://git-lfs.github.com/spec/v1 -oid sha256:536c7104c1093bba7661e674c4107b6f2b1f9bcb92cad218294cc8c0830e9d98 -size 70354 +oid sha256:c018bb7816c07199e1ed1c3527a21c892be4e5a3fde74672e01eccbd2a3c0512 +size 67179 diff --git a/画图/拉曼结果拟合/251019/2/join_and_move.ipynb b/画图/拉曼结果拟合/251019/2/join_and_move.ipynb new file mode 100644 index 0000000..6bc6943 --- /dev/null +++ b/画图/拉曼结果拟合/251019/2/join_and_move.ipynb @@ -0,0 +1,3 @@ +version https://git-lfs.github.com/spec/v1 +oid sha256:34fcae58930468b5005dcb3ab5f5992ab34cc7b79ff41ab237d714477d6aaf03 +size 1342392 diff --git a/画图/拉曼结果拟合/README.md b/画图/拉曼结果拟合/README.md index 761d54a..a0a0cb1 100644 --- a/画图/拉曼结果拟合/README.md +++ b/画图/拉曼结果拟合/README.md @@ -55,7 +55,7 @@ * 251019: * 1: 衬底侧入射 xzyx 观察 E12 离焦 0 针孔 100 积分时间 30 积分次数 10 范围 600-790 5 个点 * 2: 正入射衬底，将zxxz稍微垫高一点的结果。垫高x方向的某个方向。先分别测试不垫高和垫高的结果，确认有明显差别后再多测试几个点。 - * 3: 衬底正入射，离焦 0 针孔 100 积分时间 5 积分次数 10 范围 580-1050，1 是衬底，其余依次是 532 631 230 126 206 取 11 个点。 + * 3: 外延层正入射，离焦 0 针孔 100 积分时间 5 积分次数 10 范围 580-1050，1 是衬底，其余依次是 532 631 230 126 206 取 11 个点。 * 2510xx: * 1: 正入射衬底，将zxxz稍微垫高一点的结果。垫高x方向的某个方向。 * 2: 外延层侧入射。