Abstract
We study the three-dimensional ± J Ising model with a longitudinal anisotropic bond randomness on the simple cubic lattice. The random exchange interaction is applied only in the z direction, whereas in the other two directions, xy-planes, we consider ferromagnetic exchange. By implementing an effective parallel tempering scheme, we outline the phase diagram of the model and compare it to the corresponding isotropic one. We present a detailed finite-size scaling analysis of the ferromagnetic-paramagnetic and spin glass-paramagnetic transition lines, and we also discuss the ferromagnetic-spin glass transition regime. We conclude that the present model shares the same universality classes with the isotropic model, but at the symmetric point has a considerably higher transition temperature from the spin-glass state to the paramagnetic phase. Our data for the ferromagnetic-spin glass transition line support a forward behavior in contrast to the reentrant behavior of the corresponding isotropic model.
Original language | English |
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Journal | European Physical Journal B |
Volume | 88 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2015 |
Bibliographical note
The final publication is available at Springer via http://dx.doi.org/10.1140/epjb/e2015-50864-4.Keywords
- Anisotropy
- Ferromagnetic materials
- Ferromagnetism
- Glass
- Ising model
- Paramagnetism
- Spin glass
- Ferromagnetic exchange
- Ferromagnetic spin
- Ferromagnetic-paramagnetic
- Finite-size scaling analysis
- Paramagnetic transition
- Simple-cubic lattices
- Statistical and Nonlinear Physics
- Universality class
- Glass transition