<div dir="ltr"><div><div><div><br>Dear Prasenjit<br><br></div>I assume you have already downloaded and got familiar with the tutorial from the webpage of Quantum Espresso to calculate U. The only tricky part is that the 3+ and 2+ Fe have to be treated as atoms of different kind (although associated with the same pseudopotential) and perturbed independently.<br>
<br></div>hope this helps.<br><br></div>Matteo<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Nov 1, 2013 at 7:40 AM, Prasenjit Ghosh <span dir="ltr"><<a href="mailto:prasenjit.jnc@gmail.com" target="_blank">prasenjit.jnc@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>Dear all,<br><br></div>I am trying to do some calculations for iron oxide, in which the Fe is present in both the oxidation states, +2 and +3. Can any one suggest how to determine the value of U for such cases?<br>
<br></div>With regards,<br><br></div>Prasenjit<span class="HOEnZb"><font color="#888888"><br clear="all"><div><div><div><div><br>-- <br>PRASENJIT GHOSH,<br>IISER Pune,<br>First floor, Central Tower, Sai Trinity Building<br>
Garware Circle, Sutarwadi, Pashan<br>Pune, Maharashtra 411021, India<br>
<br>Phone: <a href="tel:%2B91%20%2820%29%202590%208203" value="+912025908203" target="_blank">+91 (20) 2590 8203</a><br>Fax: <a href="tel:%2B91%20%2820%29%202589%209790" value="+912025899790" target="_blank">+91 (20) 2589 9790</a>
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