From 8b269d067e8d25800315f156a18b4daa2671e418 Mon Sep 17 00:00:00 2001 From: Haonan Chen Date: Thu, 25 Dec 2025 12:23:05 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E7=AC=AC=E4=B8=80=E6=AE=B5?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- paper/method/experiment/default.typ | 2 ++ paper/result/perfect/default.typ | 41 ++++++++++++++++------------- 2 files changed, 24 insertions(+), 19 deletions(-) diff --git a/paper/method/experiment/default.typ b/paper/method/experiment/default.typ index 70a68a7..69044d7 100644 --- a/paper/method/experiment/default.typ +++ b/paper/method/experiment/default.typ @@ -89,4 +89,6 @@ This was confirmed by the results under different polarization configurations an 对齐：正入射、xyyx 使用 E23 对齐，其它则无法对齐，看情况处理。 +只考虑了沿 zOx 平面入射的情况。 + #include "figure-e1.typ" diff --git a/paper/result/perfect/default.typ b/paper/result/perfect/default.typ index 32d2039..64d0603 100644 --- a/paper/result/perfect/default.typ +++ b/paper/result/perfect/default.typ @@ -2,26 +2,29 @@ // 第一段：弱极性与强极性声子模式表现截然不同。如图所示，弱极性声子模式几乎不依赖于波矢方向，而强极性声子模式则表现出显著的各向异性。 -Owing to the distinct behaviors arising from different electrical polarities of Raman-active phonon modes, - they were categorized into two groups: - negligible-polarity phonons (i.e., having zero or very weak electrical polarity), - and strong-polarity phonons. -The negligible-polarity phonons exhibited minimal dependence on the wavevector direction - (see the intersection of gray solid lines and orange dashed lines in @figure-discont b and c, - where the frequency only differed #sym.tilde 0.1 cm#super[-1] across different incidence configurations), - and were therefore usually analyzed at the #sym.Gamma point regardless of the incidence configurations; -specifically, there were eight such modes - labeled A#sub[1]-1 to A#sub[1]-2, E#sub[1]-1 to E#sub[1]-2, and E#sub[2]-1 to E#sub[2]-4, - according to their irreducible representations in the C#sub[6v] group and in order of increasing frequency. -In contrast, the strong-polarity phonons displayed significant anisotropy - (see the intersection of colored solid lines and orange dashed lines in @figure-discont b and c, - where the frequency differed #sym.tilde 10 cm#super[-1] across different incidence configurations), - and required analysis under specific incidence configurations. -In this paper, we focused on incidence within the zOx plane, - where three modes were present and named according to their vibration directions: - TO-zOx (vibrating in the zOx plane and roughly perpendicular to the incidence direction), +Raman-active phonon modes were categorized into two groups, + according to the distinct behaviors arising from different electrical polarities, + including eight negligible-polarity modes (i.e., having zero or very weak electrical polarity), + and three strong-polarity modes. +The negligible-polarity modes exhibited minimal dependence on the wavevector direction, + while the strong-polarity modes showed significant anisotropy. +This distinction was clearly illustrated in @figure-discont, + where the phonon dispersion relations of negligible-polarity modes (gray solid lines) + were roughly continuous and flat at the #sym.Gamma point, + leading to only #sym.tilde 0.1 cm#super[-1] frequency variations and similar vibration patterns + across different incidence configurations. +In contrast, the strong-polarity modes (colored solid lines) displayed discontinuities at the #sym.Gamma point, + resulting in #sym.tilde 1 cm#super[-1] frequency shifts and distinct different vibration patterns + under different incidence configurations. +Consequently, the negligible-polarity modes were named + according to their irreducible representations at the #sym.Gamma point and in order of increasing frequency, + including A#sub[1]-1 to A#sub[1]-2, E#sub[1]-1 to E#sub[1]-2, and E#sub[2]-1 to E#sub[2]-4. +In contrast, the strong-polarity modes were named according to their vibration directions and incidence configurations, + including TO-zOx (vibrating in the zOx plane and roughly perpendicular to the incidence direction), TO-y (vibrating along the y-axis), and LO (vibrating roughly parallel to the incidence direction). +#include "figure-discont.typ" + In order to further investigate the frequencies dependence on the wavevector, and to confirm the accuracy of both our experiments and calculations, we analyzed the negligible-polarity phonons off the #sym.Gamma point @@ -36,7 +39,7 @@ The E#sub[2]-3 peak served as a calibration reference under various experiments, === Negligible-polarity Phonons -#include "figure-discont.typ" + #include "figure-raman.typ" Peaks corresponding to seven Raman-active negligible-polarity phonons were observed in our experiments