Anisotropy as a diagnostic test for distinct tensor-network wave functions of integer- and half-integer-spin Kitaev quantum spin liquids
Anisotropy as a diagnostic test for distinct tensor-network wave functions of integer- and half-integer-spin Kitaev quantum spin liquids
复制标题
各向异性作为整数和半整数自旋基塔耶夫量子自旋液体的不同张量网络波函数的诊断测试
DOI：
10.1103/physrevb.104.024417
复制
发表时间：
2021
影响因子：
3.7
通讯作者：
Kawashima Naoki
中科院分区：
文献类型：
--
作者：
Lee Hyun-Yong;Suzuki Takafumi;Kim Yong Baek;Kawashima Naoki
量子磁体基态与整数和半整数自旋矩的对比是多体量子干涉效应的表现。在这项工作中，我们在基塔耶夫蜂窝晶格模型的框架下研究了整数自旋和半整数自旋量子自旋液体的独特性质。与众所周知的自旋1/2体系的量子自旋液体溶液相比，具有任意自旋量子数的模型是不精确可解的。我们利用张量网络波函数对整数自旋和半整数自旋量子自旋液态进行分析，揭示了这两种状态之间的重要区别。我们发现整数自旋和半整数自旋量子自旋液体的张量网络波函数的不同符号结构导致了空间各向异性极限下完全不同的基态。因此，无论是在数值计算中还是在实际材料上的实验中，空间各向异性都将是区分这些量子自旋液态的有用诊断测试。我们通过广泛的数值支持这一发现，包括张量网络、DMRG和精确对角化计算。
Contrasting ground states of quantum magnets with the integer- and half-integer-spin moments are the manifestation of many-body quantum interference effects. In this work, we investigate the distinct nature of the integer- and half-integer-spin quantum spin liquids in the framework of the Kitaev's model on the honeycomb lattice. The models with arbitrary spin quantum numbers are not exactly solvable in contrast to the well-known quantum spin liquid solution of the spin-1/2 system. We use the tensor-network wave functions for the integer-and half-integer-spin quantum spin liquid states to unveil the important difference between these states. We find that the distinct sign structures of the tensor-network wave function for the integer- and half-integer-spin quantum spin liquids are responsible for completely different ground states in the spatially anisotropic limit. Hence the spatial anisotropy would be a useful diagnostic test for distinguishing these quantum spin liquid states, both in the numerical computations and experiments on real materials. We support this discovery via extensive numerics including the tensor-network, DMRG, and exact diagonalization computations.
影响因子：
4.6
作者：
Yadav R;Bogdanov NA;Katukuri VM;Nishimoto S;van den Brink J;Hozoi L
通讯作者：
Hozoi L
剪切粒子系统中剪切应力的时间相关函数
DOI：
--
发表时间：
2009
期刊：
Progress of Theoretical Physics, Supplement 178
影响因子：
--
作者：
T. Sakai;他;Hiroto Kuninaka,and Hisao Hayakawa;Michio Otsuki,and Hisao Hayakawa;Michio Otsuki,and Hisao Hayakawa;Hisao Hayakawa,and Michio Otsuki;Michio Otsuki,and Hisao Hayakawa
通讯作者：
Michio Otsuki,and Hisao Hayakawa