Talks and Poster Presentations (without Proceedings-Entry):
F. Kneidinger, I. Zeiringer, A. Sidorenko, H. Michor, P. Rogl, J.G. Sereni, E. Bauer:
"Magnetic frustration in the trillium lattice CeIrSi";
Poster: International Conference on Strongly Correlated Electron Systems 2019 (SCES '19),
Magnetic (χ), transport (ρ) and heat capacity (Cm) properties of CeIrSi are investigated to elucidate the effect of geometric frustration in this ternary intermetallics with the trillium type structure because, notwithstanding its robust effective moment, μeff= 2.46 μB, this Ce-lattice compound does not undergo a magnetic order transition. In spite of that it shows broad Cm(T)=T anomaly and a χ(T) maximum centered at Tmax~ 1.5 K, while a ρ proportional T2 thermal dependence, characteristic of coherent electronic spin fluctuations, is observed below Tcoh~2.5 K. Magnetic fields do not significantly affect the position of the mentioned maxima up to ~1 T, though χ(T) shows an incipient structure that completely vanishes at μ0H~ 1 T. Concerning the ρ proportional T2 dependence, it is practically not affected by magnetic fields up to μ0H = 9 T, with the residual resistivity ρ0(H) slightly decreasing and Tcoh(H) increasing. These results are compared with the physical properties observed in other frustrated intermetallic compounds.
magnetic frustartion, trillium lattice, CeIrSi
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