I tried wht the attached "in.meam" in the "examples/meam" direcotry of
"lammps-30Aug12".
I got:
../../src/lmp_crockett < in.meam
LAMMPS (30 Aug 2012)
Reading data file ...
orthogonal box = (-6 -6 -6) to (5.97232 5.97232 5.97232)
1 by 1 by 1 MPI processor grid
128 atoms
64 atoms in group Si
64 atoms in group C
Setting up run ...
Memory usage per processor = 5.10825 Mbytes
Step Temp Press TotEng PotEng pe_si pe_c
0 0 -76571.819 -636.38121 -636.38121
-322.01796 -314.36325
10 1807.8862 -150571.49 -636.54126 -666.21959
-331.71497 -334.50463
20 1932.4467 -120223.52 -636.53498 -668.2581
-336.54629 -331.71181
30 1951.3652 -100508.4 -636.54771 -668.58139
-339.94967 -328.63172
40 2172.5974 -110753.34 -636.5617 -672.22715
-339.19303 -333.03412
50 2056.9149 -105418.07 -636.56468 -670.33108
-335.96935 -334.36173
60 1947.9564 -111413.04 -636.55015 -668.52788
-335.92205 -332.60583
70 1994.7712 -109645.76 -636.54225 -669.28849
-336.14335 -333.14514
80 2126.0903 -97475.831 -636.53557 -671.43755
-338.09941 -333.33813
90 2065.755 -95858.837 -636.52338 -670.4349
-337.77919 -332.6557
100 2051.4553 -107068.9 -636.53122 -670.20799
-336.80188 -333.40611
Loop time of 0.14357 on 1 procs for 100 steps with 128 atoms
...
From the the two components of MEAM energy, half of the "pair
potential component" should be attribued to Si and other half to C
atoms, so this component could be the same for Si and C - at least
when the configuration is symmetric w.r.t. Si and C. "Embedding
component" of the energy should, in general, differ for every
individual atom.