Thermodynamic Properties of Spin 1/2 Triangular Antiferromagnet
Thermodynamic Properties of Spin 1/2 Triangular Antiferromagnet
复制标题
自旋1/2三角形反铁磁体的热力学性质
DOI：
10.1143/jpsj.56.311
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
M. Imada
中科院分区：
文献类型：
--
作者：
M. Imada
利用有限尺寸法计算了自旋为1/2的三角形反铁磁体的18个自旋，并结合热力学极限外推法计算了其热力学性质。结果表明，各向同性和类伊辛海森堡系统在低温下都处于量子自旋流体态，基态为单重态。与经典体系相比，这一结果与亚晶格有序度无关和不发生相变的观点相一致。
Finite size calculation up to 18 spins combined with the extrapolation to the thermodynamic limit is performed to obtain thermodynamic properties of spin 1/2 triangular antiferromagnet. It shows that both of isotropic and Ising-like Heisenberg systems are in quantum spin fluid state at low temperatures with the singlet ground state. In contrast with the classical system, the result is consistent with the picture that the sublattice ordering has no relevance and no phase transition occurs.