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# Contributors:
#    Daniel S. Karls
#    Ellad B. Tadmor
#    Ryan S. Elliott
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# Contributors:
#    Moon-ki Choi
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#

Model driver for a Bond-order potential based on a generalized Tersoff form, 
originally designed to provide a better representation of bulk and 2D silicon. 
The potential source is:

G. P. Purja Pun and Y. Mishin, Phys. Rev. B, 95(21):224103, 2017,
doi: 10.1103/PhysRevB.95.224103

This driver reads in one parameter file with the species followed by
nine parameters (required units indicated in square brackets following
the parameter):

species
A 	[eV]
B 	[eV]
lambda1	[1/Angstrom]
lambda2	[1/Angstrom]
eta  	[unitless]
delta	[unitless]
alpha	[unitless]
beta	[unitless]
c0	[eV]
c1 	[unitless]
c2	[unitless]
c3	[unitless]
c4	[unitless]
c5	[unitless]
h 	[unitless]
R1	[Angstrom]
R2	[Angstrom]

