Scopus
YÖKSİS Eşleşti
Role of biquadratic exchange on thermodynamic quantities in anisotropic Heisenberg model
Physica Scripta · Kasım 2024
YÖKSİS Kayıtları
Role of biquadratic exchange on thermodynamic quantities in anisotropic Heisenberg model
Physica Scripta · 2024 SCI-Expanded
PROFESÖR GÜLİSTAN MERT →
Makale Bilgileri
DergiPhysica Scripta
Yayın TarihiKasım 2024
Cilt / Sayfa99
Scopus ID2-s2.0-85207265383
Özet
The magnetic and thermodynamic properties of the spin-1 anisotropic Heisenberg system are studied within Oguchi approximation. The system contains both the bilinear and biquadratic exchange interactions between the nearest neighboring spins located on a centered honeycomb lattice. For the positive biquadratic exchange interaction parameters, the phase transition in the Heisenberg case is of both second and first order where there is a discontinuity in the thermodynamic properties at this transition temperature. For some negative biquadratic exchange interaction parameters, in both the Heisenberg and Ising cases, the ferromagnetic state changes in favor of the antiferromagnetic state. The frustrated antiferromagnetic structure created by the biquadratic exchange parameter with negative sign was shown significantly influence the magnetization, quadrupolar moment, internal energy, heat capacity, entropy and free energy of the system, where the system has an oscillating chaotic phase regime. A double peak behavior was observed in the specific heat, with one at the critical temperature and another at a low temperature.
Yazarlar (2)
1
Nida Korkmaz
2
Gülistan Mert
ORCID: 0000-0003-0351-1036
Anahtar Kelimeler
biquadratic exchange interaction
chaotic phase
oguchi approximation
thermodynamic properties
Kurumlar
Selçuk Üniversitesi
Selçuklu Turkey
Metrikler
1
Atıf
2
Yazar
4
Anahtar Kelime