[Pw_forum] Structure collapse during relaxation

2015-07-05 Thread Naseem Hassan
Dear Members, I took a 3-layer Ni-111 surface structure and checked it via xcrysden and chemcraft. The structure is fine and also my friend is using same structure in VASAP without any problem. But when I run the relaxation for this system in QE 5.1. The structure starts spreading/collapsing. I tr

[Pw_forum] Changing Kinetic Energy cut-off

2015-07-05 Thread Elliot Menkah
Hello Everyone, How does or to what extent does changing your ecut along with ecutrho affect evaluation of results from computations? For instance if you used 60Ry to compute 'delta H' for reactants and you use 40Ry to compute 'delta H' for products. Reduction to 40 Ry was because some jobs with 6

[Pw_forum] Band_structure_plot

2015-07-05 Thread Gul Rahman
Dear All, I am doing some test calculations on 2D Sn and comparing QE with SIESTA. Both QE and SIESTA almost give the same results (DOS, lattice constnat, charge,,). However, I have problem with the band structure. I want to plot the band structure in 0.0,0.0 0.0 to 0.33,0.330.00 to 0.5,0.0,0.0. I