Effects of diagonal interchain exchange interaction on the ESR modes of ABX(3)-type triangular antiferromagnets

被引：11

作者：

Kambe, T

Tanaka, H

Kimura, S

Ohta, H

Motokawa, M

Nagata, K

机构：

[1] TOKYO INST TECHNOL, FAC SCI, DEPT PHYS, MEGURO KU, TOKYO 152, JAPAN

[2] SOPHIA UNIV, FAC SCI & TECHNOL, DEPT PHYS, CHIYODA KU, TOKYO 102, JAPAN

[3] KOBE UNIV, FAC SCI, DEPT PHYS, KOBE 657, JAPAN

[4] TOHOKU UNIV, INST MAT RES, SENDAI, MIYAGI 980, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1996年 / 65卷 / 06期

关键词：

ABX(3); triangular antiferromagnet; easy-axis anisotropy; diagonal interchain interaction; electron spin resonance; CsNiBr3; GMnI(3);

D O I：

10.1143/JPSJ.65.1799

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electron Spin Resonance (ESR) measurements have been performed on axial triangular antiferromagnets CsNiBr3 and CsMnI3 in their lowest three-dimensional (3 D) ordered phase. The frequency vs. magnetic field diagrams are obtained in the frequency range from 9 to 380 GHz and the magnetic field up to 160 kOe. Several significant disagreements between the experimental data and the theory based on the conventional model are found. It is shown that the disagreements can be removed by the diagonal interchain exchange coupling J(2). The ESR theory is developed taking the J(2) coupling into account. Fitting the present theory to experimental data, the interaction parameters of CsNiBr3 and CsMnI3 are determined.

引用

页码：1799 / 1811

页数：13

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