NMR study on kagome-lattice antiferromagnet Cs2Mn3LiF12

27th International Conference on Low Temperature Physics

Moriya, S.^1 ; Usuf, Y.^2 ; Tanaka, H.^2 ; Matsui, K.^1 ; Mori, Y.^1 ; Kuroe, H.^1 ; Sasaki, T.^3 ; Goto, T.^1

Physics Division, Sophia University, Tokyo

102-8554, Japan^1

Faculty of Science, Tokyo Institute of Technology, Tokyo

152-8550, Japan^2

Institute for Material Research, Tohoku University, 980-8577, Japan^3

关键词: Antiferromagnets;    Kagome lattice;    Long range magnetic order;    Low temperatures;    Nuclear spin relaxation rate;    Resonance line;    Spin interaction;    Two-dimensional spin systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/4/042008/pdf
DOI  :  10.1088/1742-6596/568/4/042008

来源: IOP

【 摘 要 】

133Cs/7Li-NMR study was performed on a quasi-two-dimensional spin system Cs2Mn3LiF12, in which S 2 Mn atoms form undistorted Kagome lattice. We have observed a clear splitting in the Li-NMR resonance line for a single crystal at low temperatures below TN3.6 K. The longitudinal nuclear spin relaxation rate T-11of both Cs and Li-NMR showed a critical divergence at the same temperature. These observations are considered to be a microscopic evidence for an occurrence of long range magnetic order due to a weak inter-plane spin interactions.