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首页> 外文期刊>Journal of Experimental and Theoretical Physics >Phase transitions and critical properties of the frustrated Heisenberg model on a layer triangular lattice with next-to-nearest-neighbor interactions
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Phase transitions and critical properties of the frustrated Heisenberg model on a layer triangular lattice with next-to-nearest-neighbor interactions

机译:邻近邻域相互作用的分层三角形晶格上沮丧的Heisenberg模型的相变和临界性质

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摘要

The critical behavior of the three-dimensional antiferromagnetic Heisenberg model with nearest-neighbor (J) and next-to-nearest-neighbor (J_1) interactions is studied by the replica Monte Carlo method. The first-order phase transition and pseudouniversal critical behavior of this model are established for a small lattice in the interval R = |J_1/J| = 0-0.115. A complete set of the main static magnetic and chiral critical indices is calculated in this interval using the finite-dimensional scaling theory.
机译:通过复制蒙特卡罗方法研究了具有最近邻(J)和近邻(J_1)相互作用的三维反铁磁Heisenberg模型的临界行为。对于间隔R = | J_1 / J |的小晶格,建立了该模型的一阶相变和伪通用临界行为。 = 0-0.115。使用有限维缩放理论在此间隔中计算出一组完整的主要静磁和手性临界指数。

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