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北澤 崇文; 池田 陽一*; 榊原 俊郎*; 松尾 晶*; 清水 悠晴*; 徳永 陽; 芳賀 芳範; 金道 浩一*; 南部 雄亮*; 池内 和彦*; et al.
Physical Review B, 108(8), p.085105_1 - 085105_7, 2023/08
We demonstrate field-induced single-ion magnetic anisotropy resulting from the multiorbital Kondo effect on diluted ytterbium alloy (LuYb
)Rh
Zn
. Single-ion anisotropic metamagnetic behavior is revealed in low-temperature regions where the local Fermi-liquid state is formed. Specific heat, low-field magnetic susceptibility, and resistivity indicate reproduction of the ground-state properties by the SU(
= 8) Kondo model with a relatively large
-
hybridization of
= 60.9 K. Dynamical susceptibility measurements on YbRh
Zn
support realizing multiorbital Kondo ground state in (Lu
Yb
)Rh
Zn
. The single-ion magnetic anisotropy becomes evident above
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.