Effect of the off-diagonal Onsager rate coefficient on the relaxation times in a spin-1 Ising system

Keskin M., Erdem R.

PHYSICS LETTERS A, cilt.297, sa.5-6, ss.427-431, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 297 Sayı: 5-6
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0375-9601(02)00264-5
  • Dergi Adı: PHYSICS LETTERS A
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.427-431
  • Anahtar Kelimeler: spin-1 Ising system, relaxation times, Onsager coefficients, DYNAMICS
  • Akdeniz Üniversitesi Adresli: Hayır

Özet

As a continuation of our previously published works, we used the lowest approximation of the cluster variation method that is identical to the mean-field approximation and linearized equations of motions which are obtained by the Onsager reciprocity theorem to study the effect of the off-diagonal Onsager rate coefficient (gamma) on the relaxation times tau(1) and tau(2) near the critical point of the spin-1 Ising system. The temperature variations of the relaxation times have been studied for different values of the kinetic coefficient (gamma) which couples the dipolar and quadrupolar order currents in the system. Below and above the critical temperature (T-C), a maximum of tau(2) is observed according to the values of off-diagonal coefficient (gamma). (C) 2002 Elsevier Science B.V. All rights reserved.