S=1/2 Kagome Lattice Antiferromagnet Cu3V2O7(OH)2 • 2H2O Studied by High Field ESR

被引：11

作者：

Ohta, H. ^{[1
]}

Zhang, W. ^{[2
]}

Okubo, S. ^{[1
]}

Tomoo, M. ^{[2
]}

Fujisawa, M. ^{[3
]}

Yoshida, H. ^{[4
]}

Okamoto, Y. ^{[4
]}

Hiroi, Z. ^{[4
]}

机构：

[1] Kobe Univ, Mol Photosci Res Ctr, Kobe, Hyogo 6578501, Japan

[2] Kobe Univ, Grad Sch Sci, Kobe, Hyogo 6578501, Japan

[3] Kobe Univ, Dept Frontier Res & Technol, Kobe, Hyogo 6578501, Japan

[4] Univ Tokyo, ISSP, Kashiwa, Chiba 2778581, Japan

来源：

HIGHLY FRUSTRATED MAGNETISM 2008 (HFM 2008) | 2009年 / 145卷

基金：

日本学术振兴会;

关键词：

EPR;

D O I：

10.1088/1742-6596/145/1/012010

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

X-band and high field electron spin resonance (ESR) measurements on S=1/2 kagome lattice antiferromagnet Cu3V2O7(OH)(2)center dot 2H(2)O (volborthite) have been performed. Although the kagome lattice is slightly deformed in the ab plane, no sign of magnetic order is observed down to 3.8 K, which is consistent with the magnetic susceptibility and the specific heat results, because the X-band ESR result shows no g-shift and the broadening of the linewidth down to 3.8 K. However, high field ESR results above 40 GHz show continuous g-shift below 20 K, which coincides with the broad maximum in the magnetic susceptibility. These results suggest the existence of the short range order and the field dependence in the system, and they are discussed inconnection with the recent magnetization result.

引用

页数：4

共 12 条

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