<div dir="ltr"><div class="gmail_default" style="font-family:times new roman,serif"><div dir="ltr"><div class="gmail_default" style="font-family:times new roman,serif">Hi QE community,<br><br></div><div class="gmail_default" style="font-family:times new roman,serif">I
am working on improving properties of doped metal oxides. Currently
doing relaxation calculations for CeO2. I am facing a problem when
relaxation calculation with HUBBARD parameter for 'Ce' (took from
literature <b>U=5eV</b>), calculation stopped <b>without any ERROR or CRASH message</b>.
But when I am trying without HUBBARD parameter of 'Ce', calculation
achieving convergence. Another interesting thing I observed from
previous posts, When I tried with <b>U=1eV</b> (low values of HUBBARD),
calculation achieving convergence. Can you please say what will be the
reason for this behaviour? and Is there anywhere I am using wrong
parameters in the input file? (Here I am attaching my input file for the
reference)<br><br><br></div><div class="gmail_default" style="font-family:times new roman,serif">Thanks in advance<br><br><br><br></div><div class="gmail_default" style="font-family:times new roman,serif">Regards<br><br></div><div class="gmail_default" style="font-family:times new roman,serif">Phanikumar<br></div><div class="gmail_default" style="font-family:times new roman,serif">Research Scholar<br></div><div class="gmail_default" style="font-family:times new roman,serif">IIT Kharagpur, Kharagpur<br></div><div class="gmail_default" style="font-family:times new roman,serif">West Bengal, India. </div></div></div></div>