Ok Sir i agree with you...But For my System Aluminium Nitride There Are Number of mode in which A1,E1,E2 are raman active and E1 at 624 cm-1 and A1 546 cm-1, Why E1 cannot written at the place of 546 and A1 at 624?
Actually i am discussing about the space group symmetry of crystalline material how this mode assign for this name i.e, E1,A1, at particular wave number. Why these mods name come and what terminology behind this.Please clarify
Why we describe Raman modes At perticular wave number by E1 or A1,A2 or other
If E1 say at 645cm-1, Why we cannot describe A1 at this wave number.
How we write the representation at perticlar wave number. Please reply.