Dynamic dipole and quadrupole phase transitions in the kinetic spin-3/2 model


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Keskin M. , Canko O., Kirak M.

JOURNAL OF STATISTICAL PHYSICS, cilt.127, ss.359-380, 2007 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 127 Konu: 2
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1007/s10955-006-9236-2
  • Dergi Adı: JOURNAL OF STATISTICAL PHYSICS
  • Sayfa Sayıları: ss.359-380

Özet

The dynamic phase transition has been studied, within a mean-field approach, in the kinetic spin-3/2 Ising model Hamiltonian with arbitrary bilinear and biquadratic pair interactions in the presence of a time dependent oscillating magnetic field by using the Glauber-type stochastic dynamics. The nature (first- or second-order) of the transition is characterized by investigating the behavior of the thermal variation of the dynamic order parameters and as well as by using the Liapunov exponents. The dynamic phase transitions (DPTs) are obtained and the phase diagrams are constructed in the temperature and magnetic field amplitude plane and found nine fundamental types of phase diagrams. Phase diagrams exhibit one, two or three dynamic tricritical points, and besides a disordered (D) and the ferromagnetic-3/2 (F-3/2) phases, six coexistence phase regions, namely F (3/2)+ F (1/2), F (3/2)+ D, F (3/2)+ F (1/2)+ FQ, F (3/2)+ FQ, F (3/2)+ FQ + D and FQ + D, exist in which depending on the biquadratic interaction.