OBSERVATION OF ANOMALOUS ESR MODE OF CSCUCL3 IN SUBMILLIMETER-WAVE REGION

被引:28
作者
OHTA, H [1 ]
IMAGAWA, S [1 ]
MOTOKAWA, M [1 ]
TANAKA, H [1 ]
机构
[1] NAGOYA UNIV, COLL GEN EDUC, DEPT PHYS, CHIKUSA KU, NAGOYA 46401, JAPAN
关键词
CSCUCL3; SUBMILLIMETER WAVE ESR; MAGNETIC PHASE TRANSITION; QUANTUM EFFECT;
D O I
10.1143/JPSJ.62.3011
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Submillimeter wave ESR has been performed from 90 to 380 GHz for CsCuCl3 using the pulsed magnetic fields up to 15 T in the temperature range from 1.8 to 86 K. In the ordered phase below T(N)=10.5 K, shift of the ESR mode from that in the conventional mean field theory including Dzyaloshinsky-Moriya interaction has been observed for H//c above the critical field H(c) where a small jump in the magnetization occurs. These anomalies cannot be understood in terms of the mean field theory and will be discussed in connection with a new theory proposed by Shiba and Nikuni which suggests that the quantum effect is responsible for the anomalies at H(c).
引用
收藏
页码:3011 / 3014
页数:4
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