Universality in the three-dimensional random bond quantum Heisenberg antiferromagnet

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Kanbur U., Vatansever E., POLAT H.

PHYSICAL REVIEW B, cilt.102, sa.6, 2020 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 102 Sayı: 6
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1103/physrevb.102.064411
  • Dergi Adı: PHYSICAL REVIEW B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Compendex, INSPEC, zbMATH
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

The three-dimensional quenched random bond diluted (J(1) - J(2)) quantum Heisenberg antiferromagnet is studied on a simple-cubic lattice. Using extensive stochastic series expansion quantum Monte Carlo simulations, we perform very long runs for an LxLxL lattice up to L = 48. By employing a standard finite-size scaling method, the numerical values of the Neel temperature are determined with high precision as a function of the coupling ratio r = J(2)/J(1). Based on the estimated critical exponents, we find that the critical behavior of the considered model belongs to the pure classical three-dimensional O(3) Heisenberg universality class.