TY - JOUR
T1 - High-field ESR systems in Kobe
AU - Okubo, S.
AU - Ohta, H.
AU - Inagaki, Y.
AU - Sakurai, T.
N1 - Funding Information:
The authors are grateful to Prof. M. Motokawa for providing the basic FIR laser system and thank Prof. H. Nojiri and Dr. S. Kimura for the discussion concerning the stabilization of FIR laser. This work is supported by a Grant-in-Aid for Scientific Research on Priority Areas (B) (No. 13130204) from the Ministry of Education, Culture, Sports, Science and Technology, Japan. This work is also supported partly by Venture Business Laboratory of Kobe University. One of the authors (SO) acknowledges the financial support from Hyogo Science and Technology Association.
PY - 2004/4/30
Y1 - 2004/4/30
N2 - 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 Cu3(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 CsFeBr 3 for B//c at 2.0 K. Cu3(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.
AB - 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 Cu3(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 CsFeBr 3 for B//c at 2.0 K. Cu3(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.
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U2 - 10.1016/j.physb.2004.01.072
DO - 10.1016/j.physb.2004.01.072
M3 - Conference article
AN - SCOPUS:2142662242
SN - 0921-4526
VL - 346-347
SP - 627
EP - 632
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 1-4
T2 - Proceedings of the 7th International Symposium on Research
Y2 - 20 July 2003 through 23 July 2003
ER -