Nuclearmagnetic relaxation of Cs of distorted triangular antiferromagnet Cs2CuBr4
نویسندگان
چکیده
A quasi-two dimensional antiferromagnet Cs2CuBr4 is characterized as a frustrated spin system on a distorted triangular lattice. Cs-NMR experiments on Cs2CuBr4 have been performed in the range of the magnetic field applied along b-axis up to 15.9 T, which covers the field range for the 1/3 magnetization plateau. Field dependence of T−1 1 at 0.5 K shows a hysteresis around each end of the plateau, indicating a field induced first order phase transition. We also present NMR spectrum indicating hysteresis and two phase coexistence around the transition field. c ⃝ 2008 Elsevier B.V. All rights reserved. PACS: 75.30.Kz; 75.40.Gb; 76.60.-k; 75.50.Ee; 75.60.Ej
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تاریخ انتشار 2008