Phase diagram of a modified Ashkin-Teller model |
| |
| Affiliation: | 1. Physics Department, Universidad Militar Nueva Granada, Campus Nueva, Granada, Cajicá 250247, Colombia;2. Center for Research and Advanced Studies of the National Polytechnic Institute Cinvestav México, D.F 14-740, 07000, Mexico |
| |
| Abstract: | We add a term to the original Ashkin-Teller Hamiltonian in order to reduce the degeneracy. It is shoen that a certain class of terms all lead to the same Hamiltonian. The phase diagram of the isotropic model is discussed in the framework of mean field theory. It exhibits a wealth of critical phenomena. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
