Rigorous Criterion for Reentrance in the Spin-1/2 Ising-Heisenberg Model on Diamond-Like Decorated Bethe Lattices |
| J. Strečka a and C. Ekiz b
aDepartment of Theoretical Physics and Astrophysics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovak Republic bDepartment of Physics, Faculty of Science, Adnan Menderes University, 090 10 Aydin, Turkey |
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| The spin-1/2 Ising-Heisenberg model on diamond-like decorated Bethe lattices is exactly solved with the help of decoration-iteration transformation and exact recursion relations. It is shown that the model under investigation exhibits reentrant phase transitions whenever a sufficiently high coordination number of the underlying Bethe lattice is considered. |
| DOI: 10.12693/APhysPolA.118.725 PACS numbers: 05.50.+q, 75.10.-b, 75.10.Kt, 75.40.-s |