Trilayer Bethe lattices in the form of spin-(1/2,3/2,1/2)
PHYSICA B-CONDENSED MATTER, cilt.407, sa.13, ss.2642-2649, 2012 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 407 Sayı: 13
- Basım Tarihi: 2012
- Doi Numarası: 10.1016/j.physb.2012.04.016
- Dergi Adı: PHYSICA B-CONDENSED MATTER
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.2642-2649
- Anahtar Kelimeler: Bethe lattice, Trilayer, Spin-1/2, Spin-3/2, Phase diagrams, Order parameters
- Erciyes Üniversitesi Adresli: Evet
Özet
The critical behaviors of the trilayer Bethe lattice in the form of spin-(1/2,3/2,1/2) with the exterior two layers consisting of spin-1/2 and the interior one having only spin-3/2 Ising spins are studied in terms of the recursion relations with either ferromagnetic or antiferromagnetic bilinear exchange interactions between the nearest-neighbor spins. The ground-state phase diagrams are calculated and it is found that the model presents six different ground state phase configurations. The thermal variations of the order-parameter and free energy are investigated, therefore, topologically different phase diagrams of the model are obtained. It is found that the model exhibits second- and first-order phase transitions, tricritical and bicritical points for the values of the coordination numbers q = 3, 4 and 6 and, the reentrant behavior for q = 4 and 6, respectively. (C) 2012 Elsevier B.V. All rights reserved.