NEW HALDANE GAP SYSTEM CONFIRMED FROM HIGH-FIELD MAGNETIZATION

被引：14

作者：

KIKUCHI, H

AJIRO, Y

MORI, N

GOTO, T

ARUGA, H

机构：

[1] KYOTO UNIV,FAC SCI,DEPT CHEM,SAKYO KU,KYOTO 606,JAPAN

[2] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 76卷 / 08期

关键词：

D O I：

10.1016/0038-1098(90)90072-J

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High-field magnetization measurements are performed on powder samples of the quasi - one - dimensional S = 1 antiferromagnets, NiC2O42L (L=2-methylimidazole and 1, 2-dimethylimidazole) up to 36 Tesla at 1.7 K and 4.2 K. The observed magnetizations are very small below the definite critical field Hc near 13 Tesla and they increase abruptly above Hc, indicating a clear evidence for the existence of the non-magnetic ground state and magnetic excited state. The results are discussed in terms of the predicted Haldane gap for the one-dimensional antiferromagnet with integer spin. The compounds investigated are newly found to be the promising candidates for the Haldane gap system. © 1990.

引用

页码：999 / 1002

页数：4

共 14 条

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