FRUSTRATED SPIN-1/2 MODEL IN 2 DIMENSIONS WITH A KNOWN GROUND-STATE

被引：22

作者：

BOSE, I ^{[1
]}

MITRA, P ^{[1
]}

机构：

[1] HARVARD UNIV,PHYS LABS,CAMBRIDGE,MA 02138

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.44.443

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A frustrated spin-1/2 model is constructed on the square lattice, the Hamiltonian of which contains five types of interactions: nearest neighbor (NN), diagonal (D), next-nearest neighbor (NNN), knight's-move-distance away (KM), and further-neighbor diagonal (FND). The NN bonds in a particular direction, horizontal or vertical, are of alternating coupling strengths 7J and J. The other interaction strengths are: J (for NN and D), J/2 (for NNN and KM), and J/4 (for FND). We prove that the exact ground state of the Hamiltonian is the columnar-dimer state.

引用

页码：443 / 445

页数：3

共 26 条

[1] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].