Observation of field-induced single-ion magnetic anisotropy in a multiorbital Kondo alloy (Lu,Yb)Rh$_{2}$Zn$_{20}$
| Autor: | Kitazawa, T., Ikeda, Y., Sakakibara, T., Matsuo, A., Shimizu, Y., Tokunaga, Y., Haga, Y., Kindo, K., Nambu, Y., Ikeuchi, K., Kamazawa, K., Ohkawara, M., Fujita, M. |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
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| Popis: | We demonstrate field-induced single-ion magnetic anisotropy resulting from the multiorbital Kondo effect on diluted ytterbium alloy (Lu$_{1-x}$Yb$_x$)Rh$_2$Zn$_{20}$. Single-ion anisotropic metamagnetic behavior is revealed in low-temperature regions where the local Fermi-liquid state is formed. Specific hea, low-field magnetic susceptibility, and resistivity indicate reproduction of the ground-state properties by the SU($N =$ 8) Kondo model with a relatively large $c$-$f$ hybridization of $T_{\mathrm{K}} =$ 60.9 K. Dynamical susceptibility measurements on YbRh$_2$Zn$_{20}$ support realizing multiorbital Kondo ground state in (Lu$_{1-x}$Yb$_x$)Rh$_2$Zn$_{20}$. The single-ion magnetic anisotropy becomes evident above $\sim$ 5 T, which is lower than the isotropic Kondo crossover field of 22.7 T, verifying blurred low-lying crystal field states through the multiorbital Kondo effect. 14 pages, 12 figures, 6 pages of supplementary material, accepted in Physical Review B ( https://journals.aps.org/prb/accepted/bf078Y21M7417b7bd5991ec0a99fa4f53a5fc5b91 ) |
| Databáze: | OpenAIRE |
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