Disordered spin‐one Ising model with biquadratic exchange interaction within functional integration method | Zendy

Rudavskii Yu. | Zendy; Vatamaniuk O. | Zendy; Savenko V. | Zendy

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Disordered spin‐one Ising model with biquadratic exchange interaction within functional integration method

Author(s) -

Rudavskii Yu.,

Vatamaniuk O.,

Savenko V.

Publication year - 1996

Publication title -

physica status solidi (b)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.51

H-Index - 109

eISSN - 1521-3951

pISSN - 0370-1972

DOI - 10.1002/pssb.2221970222

Subject(s) - ising model , condensed matter physics , statistical physics , series (stratigraphy) , exchange interaction , spin (aerodynamics) , phase (matter) , physics , series expansion , energy functional , random phase approximation , energy (signal processing) , phase transition , ferromagnetism , quantum mechanics , thermodynamics , biology , paleontology

A disordered spin‐one Ising model with biquadratic exchange interaction is investigated within a functional integration approach. The free energy is presented in the form of a functional expansion in a series over the Fourier‐transformed density fluctuations. In random phase approximation expressions for phase transition temperatures are obtained. The structural disorder is simulated by means of hard core system structure factors.

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