Dear siesta users

I try to optimize a structure for transiesta calculation.

But with a cell parameters that make pbc along z-direction the relaxed
geometry were disordered, but when I extended the cell dimensions the
output is much better.

I don’t know what is wrong?

Can I increase the cell dimension along x and y up to gain a good structure?

I attached the input file and output of two different cell dimensions.

Kind regards

Azar

Attachment: cc-bt-cc-83-10.1.xyz
Description: Protein Databank data

Attachment: e-cc-bt-cc-e-83-50.xyz
Description: Protein Databank data

Attachment: cc-3bt-cc-1-83.fdf
Description: application/vnd.fdf

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