Dresden 2017 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 19: Poster Session: Correlated Electrons 1

TT 19.33: Poster

Montag, 20. März 2017, 15:00–19:00, P2-EG

ESR study of the triangular-lattice antiferromagnet Cs₂CuBr₄ — •E. Schulze^1,2, A. N. Ponomaryov¹, J. Wosnitza^1,2, H. Tanaka³, and S. A. Zvyagin¹ — ¹Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, Germany — ²Institut für Festkörperphysik, TU Dresden, Germany — ³Department of Physics, Tokyo Institute of Technology, Japan

We present high-field electron spin resonance (ESR) studies of the spin-1/2 triangular-lattice antiferromagnet Cs₂CuBr₄. The temperature dependences of ESR parameters (the effective g factor and ESR linewidth) were measured for magnetic fields applied along the three principal directions. From the angular dependence of the ESR linewidth the Dzyaloshinskii-Moriya interaction was estimated. The results are compared with the data obtained on the isostructural compound Cs₂CuCl₄.