Dear Daniel, It would be more useful if you post the input file you're using, or at least the atomic coordinates. Also, check if the system is well represented by the coordinates you are intending to relax, since a well-defined system usually converges at E_cutoff values as low as 60 Ryd for simple SCF calculations. (Does he system look as you expect when viewed in XCrysden, for example?) , unless you include rather demanding features like spin polarization, electric fields, defects and so on. By the way, Are norm-conserving PP's the only choice?(how about Ultrasoft?)
Moreover, what type of relax calculation do you want to study? judging by the info you sent, it is 'relax', but, Wouldn't be that your system need some cell parameters/angles relaxing (vc-relax), not just atomic coordinates one? Best regards, *Prof. Josué Clavijo, PhD* *Cristiano, born again* Assistant Professor Universidad Nacional de Colombia Sede Bogotá
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