What is lattice mode in RAMAN vibration mode? In general, can you help me about what the lattice mode is in the RAMAN analysis?
I'm working on Sb2S3 thin films. During the Raman analysis, I saw that there are lattice mode vibrational modes. How is it different from symmetric S–Sb–S stretching or symmetric S–Sb–S bending? In General, can you help me about what the lattice mode is in the RAMAN analysis?
Lattice modes extend over the crystal and can be thought of as vibrations of the unit cells. The more extended they get the lower in frequency they become....down to the exciting line of the laser... Only some of them are optical modes and can be observed if they are Raman active. The acoustic modes are largely sound waves.
Thank you for the guidance, Nicholas Edward Schlotter. Can this mode be distinctive for a compound (Sb2S3)?
Not sure exactly what you mean. You will mostly likely will see low frequency peaks that are specific to the material. It is not a material I have investigated so I am not sure what frequencies are expected.
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