It is proved that the critical concentration pc of ferromagnetic bonds below which no ferromagnetic phase exists in a non-Ising -7 model is equal to or larger than that of the Ising -J model on the same lattice. I also develop an argument that Pc is universal for the -J model with any type of spin on any specified lattice.
|Number of pages||2|
|Journal||journal of the physical society of japan|
|Publication status||Published - 1992 Mar|
ASJC Scopus subject areas
- Physics and Astronomy(all)