Observation of Anomalous ESR Mode of CsCuCl3in Submillimeter Wave Region
- 15 September 1993
- journal article
- letter
- Published by Physical Society of Japan in Journal of the Physics Society Japan
- Vol. 62 (9) , 3011-3014
- https://doi.org/10.1143/jpsj.62.3011
Abstract
Submillimeter wave ESR has been performed from 90 to 380 GHz for CsCuCl 3 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 .Keywords
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