Physical properties of CeIrSi with trillium-lattice frustrated magnetism
| Autor: | J. G. Sereni, I. Zeiringer, Herwig Michor, A. Siderenko, Peter Rogl, E. Bauer, F. Kneidinger |
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| Rok vydání: | 2019 |
| Předmět: |
Physics
Strongly Correlated Electrons (cond-mat.str-el) Magnetism media_common.quotation_subject Frustration FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Heat capacity Condensed Matter - Strongly Correlated Electrons Residual resistivity Crystallography Lattice (order) 0103 physical sciences Condensed Matter::Strongly Correlated Electrons Electronic spin 010306 general physics 0210 nano-technology media_common |
| DOI: | 10.48550/arxiv.1906.00832 |
| Popis: | Magnetic ($\chi$), transport ($\rho$) and heat capacity ($C_m$)properties of CeIrSi are investigated to elucidate the effect of geometric frustration in this compound with trillium type structure because, notwithstanding its robust effective moment, $\mu_{\rm eff}\approx 2.46\mu_B$, this Ce-lattice compound does not undergo a magnetic transition. In spite of that it shows broad $C_m(T)/T$ and $\chi(T)$ maxima centered at $T_{max}\approx 1.5$\,K, while a $\rho \propto T^2$ thermal dependence, characteristic of electronic spin coherent fluctuations, is observed below $T_{coh} \approx 2.5$\,K. Magnetic field does not affect significantly the position of the mentioned maxima up to $\approx 1$\,T, though $\chi(T)$ shows an incipient structure that completely vanishes at $\mu_0 H \approx 1$\,T. Concerning the $\rho \propto T^2$ dependence, it is practically not affected by magnetic field up to $\mu_0 H = 9$\,T, with the residual resistivity $\rho_0(H)$ slightly decreasing and $T_{coh}(H)$ increasing. These results are compared with the physical properties observed in other frustrated intermetallic compounds Comment: 8 pages, 7 figures |
| Databáze: | OpenAIRE |
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