<div>Dear Dr.Alexandre <br>Thanks a lot for your help.</div>
<div>best the wishes</div>
<div>Amin<br> </div>
<div><span class="gmail_quote">On 1/20/07, <b class="gmail_sendername">Alexandre Smogunov</b> <<a href="mailto:smogunov@sissa.it">smogunov@sissa.it</a>> wrote:</span>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Dear Amin<br>For theory and computational procedure you can look at our papers:<br>PRB 70, 045417 (2004); PRB 73, 075418 (2006).
<br>In our method we follow closely to the method of Choi and Ihm<br>described in details in PRB 59, 2267 (1999).<br>Recent extension of our method to spin-orbit coupling is given in<br>PRB 74, 045429 (2006).<br>For practical examples you can have look at example12 and example22
<br>of ESPRESSO package.<br>Good luck and feel free to ask any questions,<br>Alexander.<br><br><br><br>Phys. Rev. B 74, 045429 (2006)<br><br>Quoting Amin Babazadeh <<a href="mailto:babazade@gmail.com">babazade@gmail.com
</a>>:<br><br>> Dear Dr.Alexandre<br>> Thanks a lot for your recommendation.But i have one more question.would you<br>> please give some references for theory of calculation of transmission<br>> coefficient by using
scattering.I read your paper (Complex band structure<br>> with ultrasoft pseudopotential:fcc Ni ...) and it was so helpful for<br>> understanding the theory of calculating complex band structure.but now i am<br>> interesting to know how we can use the complex band structure to find
<br>> transmission coefficient.<br>> sincerely yours<br>><br>><br>> On 1/18/07, Alexandre Smogunov <<a href="mailto:smogunov@sissa.it">smogunov@sissa.it</a>> wrote:<br>> ><br>> > Dear Amin
<br>> > What is implemented in ESPRESSO (in the PWCOND subdirectory)<br>> > is the calculation of the ballistic conductance in nanocontacts which<br>> > is actually proportinal to the total electron transmission at the Fermi
<br>> > energy (Landauer-Buttiker formula).<br>> > The system you set up is {metal lead+scatterer+metal lead} then<br>> > you run pw.x to calculate the self-consistent potential and use further<br>> >
pwcond.x to solve the scattering problem and to calculate transmission and<br>> > reflection coefficients.<br>> ><br>> > regards, Alexander Smogunov<br>> ><br>> > Quoting Amin Babazadeh <<a href="mailto:babazade@gmail.com">
babazade@gmail.com</a>>:<br>> ><br>> > > dear users<br>> > > I will appreciate if someone tell me how i can calculate electrical<br>> > > conductivity in espresso?<br>> > > thanks a lot
<br>> > > sincerely yours<br>> > ><br>> > > --<br>> > > AMIN<br>> > ><br>> ><br>> ><br>> ><br>> ><br>> > ----------------------------------------------------------------
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