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I have a defective graphene system - 94 atoms (32 in both electrodes and 30 in scattering). The transiesta run is just not converging. I get this message:

SCF_NOT_CONV: SCF did not converge in maximum number of steps (required).
SCF_NOT_CONV: SCF did not converge in maximum number of steps (required).
Geom step, scf iteration, dmax:    0  1000    0.000000
Geom step, scf iteration, dmax:    0  1000    0.000000
Geom step, scf iteration, dq:    0  1000   -4.324581
Geom step, scf iteration, dq:    0  1000   -4.324581

Any idea what can be done?

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