Dear Vivek,<br>I think you can calculate the low frequency dielectric tensor using the PHONON output and a formula. <br>Please, see PHYSICAL REVIEW B 76, 245110 (2007), eq. (1). <br><br><div class="gmail_quote">Maybe PHONON can calculate directly, but I don not find how.<br>
Best regards<br>Eduardo<br><br>-- <br>Eduardo Menendez<br>Departamento de Fisica<br>Facultad de Ciencias<br>Universidad de Chile<br>Phone: (56)(2)9787439<br>URL: <a href="http://fisica.ciencias.uchile.cl/~emenendez">http://fisica.ciencias.uchile.cl/~emenendez</a><br>
<br><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br><br>---------- Mensaje reenviado ----------<br>From: "Vivek Ranjan" <<a href="mailto:vranjan@ncsu.edu">vranjan@ncsu.edu</a>><br>
To: <a href="mailto:pw_forum@pwscf.org">pw_forum@pwscf.org</a><br>Date: Mon, 23 Feb 2009 10:05:03 -0500 (EST)<br>Subject: [Pw_forum] [Fwd: dielectric tensor]<br><br>
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---------------------------- Original Message ----------------------------<br>
Subject: dielectric tensor<br>
From: "Vivek Ranjan" <<a href="mailto:vranjan@ncsu.edu">vranjan@ncsu.edu</a>><br>
Date: Fri, February 20, 2009 4:54 pm<br>
To: <a href="mailto:pw_forum@pwscf.org">pw_forum@pwscf.org</a><br>
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Hello,<br>
<br>
I was wondering if PWSCF can calculate low frequency dielectric<br>
permittivity tensor. I would like to calculate dielectric constant in KHz<br>
frequency range.<br>
<br>
Thank you,<br>
<br>
Vivek Ranjan<br>
NCSU<br>
<br>
<br>
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Department of Physics<br>
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