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<div dir="ltr"><font color="#000000" size="3" face="Tahoma">Dear Users,</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">I am performing non-magnetic calculations on a metal slab using hybrid DFT (with TEMP smearing). I have been able to converge 1-7 layers and 9-layer thick slabs with no serious problems. For some reason the 8-layer slab does
not want to converge. The charge density oscillates with large amplitudes and eventually the job crashes. Calculations were performed the standard way:</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma"><font face="tahoma">runsp_c_lapw</font> -ec 0.00001 -cc 0.001 -i 300 -p</font></div>
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<div dir="ltr"><font face="tahoma"><font face="tahoma">runsp_c_lapw</font> -ec 0.00001 -cc 0.001 -i 300 -p -so</font></div>
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<div dir="ltr"><font face="tahoma"><font face="tahoma">runsp_c_lapw</font> -ec 0.00001 -cc 0.001 -i 300 -p -so -eece</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">The problem begins in step 1 (NSO calculations). I've pulled all the standard tricks (reduce mixing, etc.) but the problem will just not go away. The first few cycles for the charge distance looks like:</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr">:DIS : CHARGE DISTANCE ( 3.0623129 for atom 2 spin 2) 4.8323633<br>
:DIS : CHARGE DISTANCE ( 3.7525968 for atom 8 spin 2) 4.8109130<br>
:DIS : CHARGE DISTANCE ( 4.5335108 for atom 4 spin 2) 4.7597241<br>
:DIS : CHARGE DISTANCE ( 5.1545071 for atom 8 spin 2) 4.9702637<br>
:DIS : CHARGE DISTANCE ( 5.0675077 for atom 1 spin 2) 4.8569369<br>
:DIS : CHARGE DISTANCE ( 4.9684119 for atom 1 spin 2) 4.7391195<br>
:DIS : CHARGE DISTANCE ( 4.3727780 for atom 1 spin 2) 4.3237943<br>
:DIS : CHARGE DISTANCE ( 3.7769948 for atom 4 spin 2) 4.8503262<br>
:DIS : CHARGE DISTANCE ( 3.3436987 for atom 4 spin 2) 3.8495739<br>
:DIS : CHARGE DISTANCE ( 3.2228522 for atom 1 spin 2) 5.1590833<br>
:DIS : CHARGE DISTANCE ( 2.7148248 for atom 7 spin 2) 3.7982418<br>
:DIS : CHARGE DISTANCE ( 3.3313579 for atom 7 spin 2) 4.5302253<br>
:DIS : CHARGE DISTANCE ( 3.3598285 for atom 4 spin 2) 5.0925813<br>
:DIS : CHARGE DISTANCE ( 2.9529033 for atom 4 spin 2) 5.2109088<br>
:DIS : CHARGE DISTANCE ( 3.3483133 for atom 4 spin 2) 5.0412665<br>
:DIS : CHARGE DISTANCE ( 2.9641391 for atom 7 spin 2) 4.8027516<br>
:DIS : CHARGE DISTANCE ( 3.1663445 for atom 4 spin 2) 4.7292585<br>
:DIS : CHARGE DISTANCE ( 3.2054421 for atom 5 spin 2) 3.9307946<br>
:DIS : CHARGE DISTANCE ( 3.1672886 for atom 5 spin 2) 4.4866535<br>
:DIS : CHARGE DISTANCE ( 3.2654575 for atom 1 spin 2) 5.0048377<br>
:DIS : CHARGE DISTANCE ( 3.1100926 for atom 5 spin 2) 4.2558609<br>
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<div dir="ltr"><font face="tahoma">Any suggestions would be appreciated.</font></div>
<div dir="ltr"><font face="tahoma"></font> </div>
<div dir="ltr"><font face="tahoma">Thank you.</font></div>
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