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2025-07-05 14:28:12 +08:00
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commit e7dcf30864
2 changed files with 10 additions and 9 deletions

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@@ -23,15 +23,16 @@ The form of the Raman tensors (i.e., which components are non-zero) could be det
The 18 negligible-polar phonons at the #sym.Gamma point
correspond to twelve irreducible representations of the C#sub[6v] point group
(2A#sub[1] + 4B#sub[1] + 2E#sub[1] + 4E#sub[2]).
By further considering the doubly degenerate modes of the C#sub[6v] (E#sub[1] and E#sub[2])
By further decomposing the doubly degenerate modes (E#sub[1] and E#sub[2] of C#sub[6v] group)
in the C#sub[2v] point group,
the form of the 18 negligible-polar phonons' Raman tensors can be determined, as shown in @table-rep.
Phonons of the B#sub[1] representation in C#sub[6v] have a zero Raman tensor and do not contribute to Raman scattering,
the form of the 18 negligible-polar phonons' Raman tensors can be determined, as summarized in @table-rep.
Phonons of the B#sub[1] representation in C#sub[6v] possess zero Raman tensors
and thus do not contribute to Raman scattering,
while other phonons have non-zero Raman tensor components,
indicating they may be observable in Raman experiments under appropriate incidence and polarization configurations.
However, whether a mode is sufficiently strong to be experimentally visible
depends on the magnitudes of its Raman tensor components,
which cannot be determined solely from symmetry analysis.
making them potentially observable in Raman experiments under appropriate incidence and polarization configurations.
It should be noted, however, that the observability in Raman experiment depends not only on the tensor form,
but also on the magnitude of its Raman tensor components,
which cannot be inferred from symmetry considerations alone.
#include "table-rep.typ"

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@@ -49,10 +49,10 @@
- [x] 中文
- [x] 英文
- [x] 调整语言
- [/] 表示
- [x] 表示
- [x] 中文
- [x] 英文
- [ ] 调整语言
- [x] 调整语言
- [ ] 估算拉曼张量
- [ ] 中文
- [ ] 英文