High-field ESR systems in Kobe

被引：9
|
作者：
Okubo, S
Ohta, H
Inagaki, Y
Sakurai, T
机构：
[1] Kobe Univ, Mol Photosci Res Ctr, Nada Ku, Kobe, Hyogo 6578501, Japan
[2] Kobe Univ, Venture Business Lab, Kobe, Hyogo 6578501, Japan
[3] Kobe Univ, Grad Sch Sci & Technol, Kobe, Hyogo 6578501, Japan
来源：
PHYSICA B-CONDENSED MATTER | 2004年 / 346卷
关键词：
high-field ESR; AFMR; quantum spin chain; spin frustration; CsFeBr3; Cu-3(CO3)(2)(OH)(2);
D O I：
10.1016/j.physb.2004.01.072
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Recent developments of the high-field facility in Kobe University are presented. A far infrared radiation (FIR) laser system, which can generate electromagnetic waves from 500 GHz to 3 THz has been installed. Now the frequency region for high-field ESR is extended from 30 GHz to 3 THz using Gunn oscillators, BWOs and a FIR laser. Recent high-field ESR results of quantum spin systems CsFeBr3 and Cu-3(CO3)(2)(OH)(2) using these light sources are presented. CsFeBr3 is known as a field-induced antiferromagnetic ordering substance, and we found new ESR modes in the high-field phase of CsFeBr3 for B//c at 2.0 K. Cu-3(CO3)(2)(OH)(2) is the model substance for the S = 1/2 quantum diamond chain, and we observed the direct transition in the ESR measurement at 1.9 K for B//c. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：627 / 632
页数：6
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