quantum-espresso/QHA/tetrahedra/ttrinp_bct

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7 4 12
0.00000 0.00000 0.00000 ! Gamma
1.00000 0.00000 0.00000 ! Z
0.50000 0.50000 0.00000 ! X
1.00000 0.00000 0.19481 ! V
0.50000 0.50000 0.60680 ! P
0.50000 0.00000 0.60680 ! N
0.00000 0.00000 1.01879 ! Z'
1 2 3 5
1 2 4 5
1 4 5 6
1 5 6 7
How to get vertexes V P N, Z' for bct lattices with c<a
Use scf.in file and XCrysDen to find vertex for Z', let us to sign it as "p"
(Z has indexes "p,p,p" wrt basis vectors).
Then:
Z' - 0.0, 0.0, 2*p*a/c
V - 1.0, 0.0, a/c-2*p*a/c
P - 0.5, 0.5, 0.5*a/c
N - 0.5, 0.5, 0.5*a/c