<div>Dear Stefaan,</div>
<div> </div>
<div> Thanks for your reply .</div>
<div> For distinguishing magnetic ground state in Gd; we thought that Etot can help us but Etot in antiferro and ferro calculation are equal !</div>
<div>Already Dr.Blaha wrote to me Etot in antiferro and ferro calculation are equal .</div>
<div> </div>
<div> </div>
<div>sincerely</div>
<div> osay<br><br> </div>
<div><span class="gmail_quote">On 1/3/06, <b class="gmail_sendername">Stefaan Cottenier</b> <<a href="mailto:Stefaan.Cottenier@fys.kuleuven.be">Stefaan.Cottenier@fys.kuleuven.be</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid"><br>> What the meaning of EFG ? I think that this parameter is a tensor but<br>> the result of wien2k is a number !
<br><br>No, wien2k gives you all the components of the tensor:<br><br>:EFG001: EFG = 24.11651 *10**21 V /<br>m**2<br> V20 TOT/SRF= -11.02902 -0.04086
<br><=====<br> V22 TOT/SRF= 17.67855 0.04749<br><===== These 5 numbers are the tensor in<br> V22M TOT/SRF= 1.57880 0.00406<br><===== its spherical form
<br> V21 TOT/SRF= 0.00000 0.00000 <=====<br> V21M TOT/SRF= 0.00000 0.00000 =======<br><br> 24.04616 1.57880 0.00000 24.11651
0.00000<br>0.00000<br> 1.57880 -11.31094 0.00000 0.00000 -11.38130<br>0.00000<br> 0.00000 0.00000 -12.73522 0.00000 0.00000<br>-12.73522<br><br>And the 3x3 matrix above is the tensor in its cartesian form (traceless
<br>symmetric matrix). Left: in the global axis system. Right: in the local<br>axis system.<br><br>> How can we find that the ground state of a system is ferro or antiferro ?<br>> for example Etot can help us to find that which structure is the
<br>> best . Is there any parameter to help us for finding the ground state<br>> (ferro or antiferro) ?<br><br>Again with E_tot: calculate E_tot for the ferromagnetic or<br>antiferromagnetic structure (preferably with the same cell size), and
<br>compare them.<br><br>Stefaan<br><br><br>Disclaimer: <a href="http://www.kuleuven.be/cwis/email_disclaimer.htm">http://www.kuleuven.be/cwis/email_disclaimer.htm</a><br><br>_______________________________________________
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