【摘 要】
：
By utilizing tensor-network-based methods, we investigate the zero-and finite-temperature properties of thespin-1/2 Heisenberg antiferromagnetic (HAF) model
【机 构】
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TheoreticalCondensedMatterPhysicsandComputationalMaterialsPhysicsLaboratory,SchoolofPhysics,Universi
【出 处】
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第十三届国际凝聚态理论与计算材料学会议(The 13th International Conference on Con
论文部分内容阅读
By utilizing tensor-network-based methods, we investigate the zero-and finite-temperature properties of thespin-1/2 Heisenberg antiferromagnetic (HAF) model on an infinite Husimi lattice that contains 3 /2 sites pertriangle.The ground state of this model is found to possess vanishing local magnetization and is featureless;thespin-spin and dimer-dimer correlation functions are verified to decay exponentially, and its ground-state energyper site is determined to be e0 =-0.4343(1), which is very close to that [e0 =-0.4386(5)] of the intriguingkagome HAF model.The magnetization curve shows the absence of a zero-magnetization plateau, implying agapless excitation.A 1/3-magnetization plateau with spin-up-up-down state is observed, which is selected andstabilized by quantum fluctuations.A ground-state phase diagram under magnetic fields is presented.Moreover, both magnetic susceptibility and the specific heat are studied, whose low-temperature behaviors reinforce the con-clusion that the HAF model on the infinite Husimi lattice owns a gapless and featureless spin-liquid ground state.
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