HIDDEN ORDER AND SYMMETRY-BREAKING IN THE GROUND-STATE OF A SPIN-1/2 ANTIFERROMAGNETIC HEISENBERG LADDER

被引：18

作者：

WATANABE, H

机构：

[1] ULSI Laboratory, Toshiba Research and Development Center, Komukai

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.52.12508

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is shown that the ground state of a spin-1/2 antiferromagnetic ladder model is a string order parameter which is similar to but differs from that introduced by den Nijs and Rommelse. This reveals the presence of a hidden antiferromagnetic order and symmetry breaking even in the ground state which relates to high-T-c superconductors. The inverse correlation length is further calculated for any ratio of the interchain and intrachain couplings under shifted boundary conditions.

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页码：12508 / 12511

页数：4

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