<div dir="ltr">hi <div>Quantum espresso users</div><div>i have been calculate nscf calculation for graphene with 8 atom. </div><div>i use this method for this calculation : relax -> scf -> nscf ->dos</div><div>and in scf calculation i use atomic position & cell_parameter from relax output.</div>
<div>but nscf calculation give this message: </div><div><br></div><div><div> Band Structure Calculation</div><div> Davidson diagonalization with overlap</div><div> c_bands: 1 eigenvalues not converged</div><div>
c_bands: 1 eigenvalues not converged</div><div> c_bands: 1 eigenvalues not converged</div><div> c_bands: 1 eigenvalues not converged</div><div> c_bands: 1 eigenvalues not converged</div><div> c_bands: 1 eigenvalues not converged</div>
<div> c_bands: 1 eigenvalues not converged</div><div> c_bands: 1 eigenvalues not converged</div><div> c_bands: 1 eigenvalues not converged</div></div><div><br></div><div>i am worry about eigenvalues not converged. is it important this message? or i could ignore ? </div>
<div>pleas guide me</div><div><br></div><div><br></div><div>best regard</div><div><br></div><div>Ehsan Targholi</div><div>graduate student of chemistry department of iust</div></div>