# DATE: 2023-10-30 UNITS: metal CONTRIBUTOR: Federica Lodesani <federica.lodesani@unimore.it>  CITATION: Bertani, Menziani, Pedone (2021). Physical Review Materials, 5(4), 045602
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# Multiple entries can be added to this file, LAMMPS only reads the ones it needs
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# These entries are in LAMMPS "metal" units:
#
# Format of a single entry (one or more lines):
#   element 1 (central atom), element 2, element 3,
#   k_theta, theta_0, rho, cutoff
#
# (ijj)-->determines cutoff for i-j distance
# (jik)-->determines k, theta_0 for i-j-k angle term
#
# i  j  k   K     theta0   rho  cutoff
O   P   P    32.5  109.47   1.0   3.3
O   P   Si   60.0  109.47   1.0   0.000
O   P   O   0.000  0.000    1.0   0.000
O   Si  P    60.0  109.47   1.0   0.000
O   Si  Si   12.5  109.47   1.0   3.3
O   Si  O   0.000  0.000    1.0   0.000
O   O   P   0.000  0.000    1.0   0.000
O   O   Si  0.000  0.000    1.0   0.000
O   O   O   0.000  0.000    1.0   0.000
P   P   P   0.000  0.000    1.0   0.000
P   P   Si  0.000  0.000    1.0   0.000
P   P   O   0.000  0.000    1.0   0.000
P   Si  P   0.000  0.000    1.0   0.000
P   Si  Si  0.000  0.000    1.0   0.000
P   Si  O   0.000  0.000    1.0   0.000
P   O   P   0.000  0.000    1.0   0.000
P   O   Si  0.000  0.000    1.0   0.000
P   O   O   0.000  0.000    1.0   0.000
Si  P   P   0.000  0.000    1.0   0.000
Si  P   Si  0.000  0.000    1.0   0.000
Si  P   O   0.000  0.000    1.0   0.000
Si  Si  P   0.000  0.000    1.0   0.000
Si  Si  Si  0.000  0.000    1.0   0.000
Si  Si  O   0.000  0.000    1.0   0.000
Si  O   P   0.000  0.000    1.0   0.000
Si  O   Si  0.000  0.000    1.0   0.000
Si  O   O   0.000  0.000    1.0   0.000