Spin-One Ising Model with Bilinear and Biquadratic Interactions
作者： Kazuhiro Takahashi , Motoyuki Tanaka
DOI: 10.1143/JPSJ.46.1428
关键词: Condensed matter physics 、 Phase transition 、 Chain (algebraic topology) 、 Connection (mathematics) 、 Physics 、 Spin-½ 、 Bilinear interpolation 、 Ising model 、 Mathematical physics 、 Dipole 、 Heat capacity 、 General Physics and Astronomy
摘要: The spin-1 Ising model with bilinear and biquadratic interactions is investigated using a generalized constant-coupling approximation two parameters. Equations to determine these parameters are derived by minimizing the variational free energy. averages of dipolar quadrupolar moments expressed in terms first ascertained give exact results for linear chain, then detail quadrupolar-coupled system comparison molecular-field results. pair-correlation heat capacity this also connection phase transition. For effect anisotropy constant transition discussed.
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