Usage of tersoff on SiO2

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1

I would like to use tersoff potential on SiO2. Manual of lammps shows that the usage as follows:

pair_style tersoff
pair_coeff * * Si.tersoff Si
pair_coeff * * SiC.tersoff Si C Si

However, when I use the settings as similar it, lammps give me error for the pair_coeff lines.

Please guide me to run this calculation. How can I use tersoff on SiO2?

Best regards,
Mijiddorj

2

Which of those pair coeff commands is correct depends on how many atom
types you have defined. However the SiC file is not going to do a good
job modeling SiO2.

Steve