CHECKERBOARD-SPIN LIQUID STRIPE STATE CONTINUOUS TRANSITION IN A S=1/2 FRUSTRATED HEISENBERG-ANTIFERROMAGNET ON A SQUARE LATTICE

被引:46
作者
BARABANOV, AF
BERESOVSKY, VM
机构
关键词
D O I
10.1016/0375-9601(94)90942-3
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The two-dimensional frustrated S = 1/2 Heisenberg antiferromagnet is studied with a Green function decoupling method in the spherical approach. We show that increase of the frustration parameter p=J2/(J1 + J2) (J1 and J2 denote antiferromagnetic interaction between nearest and next nearest neighbors) leads to a continuous phase transition from a long-range order checkerboard state to a spin liquid state. Further p increase causes the transition from the spin liquid state to a long-range order stripe state.
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页码:175 / 178
页数:4
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