Taking a bulk WS$_2$ (bilayer) structure and relaxing it with ISIF=3
and IVDW=10
(DFT-D2 method) using the VASP code. Then opening this structure with VESTA software. Are the shown $a$ and $c$ lattice constants the optimized ones? Or is there something else that must be done to extract them?
Here is the CONTCAR of the relaxed structure:
W2S4-D2
1.00000000000000
3.1894907296110424 -0.0000000015017362 0.0000000000000000
-1.5947448663004180 2.7621798956603310 -0.0000000000000000
-0.0000000000000000 -0.0000000000000000 12.1495560778044602
W S
2 4
Direct
0.3333330000000032 0.6666669999999968 0.2500000000000000
0.6666669999999968 0.3333330000000032 0.7500000000000000
0.3333330000000032 0.6666669999999968 0.6212727769502864
0.6666669999999968 0.3333330000000032 0.1212727769502864
0.3333330000000032 0.6666669999999968 0.8787272230497136
0.6666669999999968 0.3333330000000032 0.3787272230497136
0.00000000E+00 0.00000000E+00 0.00000000E+00
0.00000000E+00 0.00000000E+00 0.00000000E+00
0.00000000E+00 0.00000000E+00 0.00000000E+00
0.00000000E+00 0.00000000E+00 0.00000000E+00
0.00000000E+00 0.00000000E+00 0.00000000E+00
0.00000000E+00 0.00000000E+00 0.00000000E+00