Percolation Threshold - Thresholds On 3D Lattices

Thresholds On 3D Lattices

Lattice z Site Percolation Threshold Bond Percolation Threshold Dimer Percolation Threshold
(8,3)-a 3 3 0.577962(33) 0.555700(22)
(10,3)-a 3 3 0.571404(40) 0.551060(37)
(10,3)-b 3 3 0.565442(40) 0.546694(33)
ice 4 4 0.433(11) 0.388(10)
diamond 4 4 0.426(+0.08,-0.02) 0.4301(4) 0.390(11), 0.3893(2)
simple cubic 6 6 0.3116077(2), 0.311604(6), 0.311605(5), 0.311600(5), 0.3116077(4), 0.3116081(13), 0.3116080(4), 0.3116004(35) 0.24881182(10), 0.2488125(25),

0.2488126(5)

0.2555(1)
Icosahedral Penrose 6 0.285 0.225
Penrose w/2 diagonals 6.764 0.271 0.207
Stacked triangular / simple hexagonal 8 8 0.26240(5), 0.2625(2), 0.2623(2) 0.18602(2), 0.1859(2)
bcc 8 8 0.2459615(10), 0.2460(3), 0.2464(7) 0.1802875(10)
simple cubic with 3NN 8 8 0.2455(1)
fcc 12 12 0.1992365(10) 0.1201635(10)
hcp 12 12 0.1992555(10) 0.1201640(10)
La2-x Srx Cu O4 12 12 0.19927(2)
simple cubic with 2NN 12 12 0.1991(1)
Penrose w/8 diagonals 12.764 0.188 0.111
simple cubic with NN+3NN 14 14 0.1420(1)
simple cubic with NN+2NN 18 18 0.1372(1), 0.13735(5)
simple cubic with short-length correlation 6+ 6+ 0.126(1)
simple cubic with 2NN+3NN 20 20 0.1036(1)
simple cubic with NN+2NN+3NN 26 26 0.0976(1), 0.0976445(10)

NN = nearest neighbor, 2NN = next-nearest neighbor, 3NN = next-next-nearest neighbor

Question: the bond thresholds for the HCP and FCC lattice agree within the small statistical error. Are they identical, and if not, how far apart are they? Which threshold is expected to be bigger?

Read more about this topic:  Percolation Threshold