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<p class="MsoNormal">Hi,</p>

<p class="MsoNormal">I have one question: for spin-orbit calculations, the energy
bands are labelled with double point group notation (D3d’ in my case). </p>

<p class="MsoNormal">Some of the energy-degenerate states have different irrep
labels and I wonder why…</p>

<p class="MsoNormal">e.g. the valence band top:</p>

<p class="MsoNormal" style=""><span style="font-size: 10pt; font-family: "Courier New";"><span style="">     </span></span><span style="font-size: 10pt; font-family: "Courier New";" lang="ES">e( 45 - 46) =<span style="">      </span>7.09176<span style=""> 
</span>eV<span style="">     </span>2<span style="">   </span>--> G_5+<span style=""> 
</span>L_4+<span style="">     </span></span></p>

<p class="MsoNormal" style=""><span style="font-size: 10pt; font-family: "Courier New";" lang="ES"><span style="">     </span>e( 45 - 46) =<span style="">      </span>7.09176<span style=""> 
</span>eV<span style="">     </span>2<span style="">   </span>--> G_6+<span style=""> 
</span>L_5+<span style="">     </span></span></p>

<p class="MsoNormal">I would be grateful for your reply or some literature
reference, as I am not familiar with the group theory.</p>

<p class="MsoNormal">Many thanks,</p>

<p class="MsoNormal">Silvia</p>

<div class="gmail_quote"><p class="MsoNormal"><br></p><p class="MsoNormal">----------------------<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/" target="_blank">http://spectra.phy.bris.ac.uk/</a><br><span style="font-size: 10pt; font-family: "Courier New"; color: black;"></span></p>



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