Spin-chirality duality in a spin ladder with four-spin cyclic exchange

被引：50

作者：

Hikihara, T ^{[1
]}

Momoi, T

Hu, X

机构：

[1] Natl Inst Mat Sci, Computat Mat Sci Ctr, Tsukuba, Ibaraki 3050047, Japan

[2] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.90.087204

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Effect of four-spin cyclic exchange on magnetism is studied in the two-leg S=1/2 ladder. We develop an exact spin-chirality duality transformation, under which the system is self-dual when the four-spin exchange J(4) is half of the two-spin exchange. Using the density-matrix renormalization-group method and the duality relation, we find that the four-spin exchange makes the vector-chirality correlation dominant. A "chirality short-range resonating-valence-bond" phase is identified for the first time at large J(4).

引用

页数：4

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