<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Helvetica, sans-serif; "><div><div><div><div style="font-family: Helvetica; font-size: medium; ">I am trying to calculate the electron-phonon scattering rate in k-space using the phonon eigenvalues and eigenvectors calculated from matdyn.x.</div><div style="font-family: Helvetica; font-size: medium; ">So I read the eigenvalues and eigenvectors from the output file (i.e. matdyn.modes) and I check the normalization of the eigenvectors at a given phonon wavevector q and phonon mode /eta by summing the square of absolute value of eigenvectors over all the atoms.</div><div style="font-family: Helvetica; font-size: medium; "><br></div><div style="font-family: Helvetica; font-size: medium; ">When I calculate the electron-phonon interaction, I use the polarization vector which is conventionally denoted as 'e^{\alpha}_{q,\eta}' for an atom \alpha at a given q and mode \eta.</div><div style="font-family: Helvetica; font-size: medium; "><br></div><div style="font-family: Helvetica; font-size: medium; ">Here I wonder if I can use the phonon eigenvectors directly calculated from 'matdyn.x' as my polarization vector 'e^{\alpha}_{q,\eta}'.</div><div style="font-family: Helvetica; font-size: medium; ">Or do I have to re-normalize the eigenvectors by multiplying masses somehow?</div><div style="font-family: Helvetica; font-size: medium; "><br></div><div style="font-family: Helvetica; font-size: medium; ">Thank you.</div><div style="font-family: Helvetica; font-size: medium; "><br></div></div><div><div><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; ">JISEOK KIM, Ph.D.</span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; "><br></span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; ">Postdoctoral Research Associate</span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; "><br></span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; ">Department of Materials Science and Engineering</span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; "><br></span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; ">University of Texas at Dallas</span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; "><br></span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; ">800 W. Campbell Rd. RL10</span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; "><br></span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; ">Richardson, TX 75080</span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; "><br></span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; ">(413)386-6285</span><span class="Apple-style-span" style="font-family: Helvetica; font-size: medium; "><br></span></div></div></div></div></body></html>