Dear all,<br><br>When I calculate phonon spectra of my structure I see that all the modes (including acoustics) are both Raman and Infrared active. Being both R+IR active of all modes seems unphysical. Did anyone experience this type of error ?<br>
<br>-- <br><pre><b>SINCERELY<br><br>##########################################<br> Hasan Sahin<br> Bilkent University<br> National Nanotechnology Research Center<br> <br> <a href="http://www.bilkent.edu.tr/%7Eshasan/" target="_blank">http://www.bilkent.edu.tr/~shasan/</a><br>
<br> <a href="http://www.researcherid.com/rid/G-4747-2010">http://www.researcherid.com/rid/G-4747-2010</a><br><br>##########################################</b><br></pre><br>