Critical magnetization behavior of the triangular- and kagome-lattice quantum antiferromagnets

被引：94

作者：

Sakai, Toru ^{[1
,2
,3
]}

Nakano, Hiroki ^{[2
]}

机构：

[1] Japan Atom Energy Agcy, Sayo, Hyogo 6795148, Japan

[2] Univ Hyogo, Grad Sch Mat Sci, Kamigori, Hyogo 6781297, Japan

[3] TRIP JST, Kawaguchi, Saitama 3320012, Japan

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 10期

关键词：

HEISENBERG-ANTIFERROMAGNET; EXACT SPECTRA; ORDER; EXCITATIONS; TRANSITION;

D O I：

10.1103/PhysRevB.83.100405

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate S = 1/2 quantum spin antiferromagnets on the triangular and Kagome lattices in a magnetic field, using the numerical exact diagonalization. We focus particularly on an anomalous magnetization behavior of each system at one-third the saturation magnetization. Critical exponent analyses suggest that it is a conventional magnetization plateau on the triangular lattice, while an unconventional phenomenon, called the magnetization ramp, occurs on the Kagome lattice.

引用

页数：4

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