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<p class="MsoNormal" style=""><span style="font-size: 10pt; font-family: &quot;Courier New&quot;; color: black;">Hi,</span></p>

<p class="MsoNormal" style=""><span style="font-size: 10pt; font-family: &quot;Courier New&quot;; color: black;">I am using epsilon.x to obtain the dielectric function of uniaxial
material (ibrav= 5 with trigonal symmetry).</span></p>

<p class="MsoNormal" style=""><span style="font-size: 10pt; font-family: &quot;Courier New&quot;; color: black;">However, e.g. the file epsi.dat contains three different values
epsi_x epsi_y<span style=""> </span>epsi_z, while there should
be two independent components (for E perpendicular and parallel to the optical
axis, e.g. </span><span style="font-size: 10pt; font-family: &quot;Courier New&quot;; color: black;">epsi_x=epsi_y<span style=""></span></span><span style="font-size: 10pt; font-family: &quot;Courier New&quot;; color: black;">). Could you, please, think of what the reason could be?</span></p>


<p class="MsoNormal" style=""><span style="font-size: 10pt; font-family: &quot;Courier New&quot;; color: black;">Many thanks,</span></p>

<p class="MsoNormal" style=""><span style="font-size: 10pt; font-family: &quot;Courier New&quot;; color: black;">Silvia</span></p><p class="MsoNormal" style=""><br></p><p class="MsoNormal" style="">----------------------<br>
Dr. Silvia Bakalova,<br>Post Doctoral Researcher,<br>HH Wills Physics Laboratory,<br>Bristol, BS8 1TL, UK<br><a href="http://spectra.phy.bris.ac.uk/">http://spectra.phy.bris.ac.uk/</a><br><span style="font-size: 10pt; font-family: &quot;Courier New&quot;; color: black;"></span></p>