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CsPbBr3:
group        Cs   type 1
group        Pb   type 2
group        Br   type 3
mass         1    132.9
mass         2    207.2
mass         3    79.9
set          group   Cs   charge   0.86
set          group   Pb   charge   1.03
set          group   Br   charge  -0.63
pair_style  lj/cut/coul/long 12.0
pair_coeff  1 1  0.5784   2.927
pair_coeff  2 2  0.01071  2.524
pair_coeff  3 3  0.01023  4.129
pair_modify shift yes mix arithmetic
kspace_style pppm 1.0e-5

CsPbI3:
group        Cs   type 1
group        Pb   type 2
group        I    type 3
mass         1    132.9
mass         2    207.2
mass         3    126.9
set          group   Cs   charge   0.86
set          group   Pb   charge   0.85
set          group   I    charge  -0.57
pair_style  lj/cut/coul/long 12.0
pair_coeff  1 1  0.07728  3.584
pair_coeff  2 2  0.001086 3.210
pair_coeff  3 3  0.06389  4.014
pair_modify shift yes mix arithmetic
kspace_style pppm 1.0e-5

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