Observation of field-induced single-ion magnetic anisotropy in a multiorbital Kondo alloy $(\mathrm{Lu},\mathrm{Yb}){\mathrm{Rh}}_2{\mathrm{Zn}}_{20}$

Abstract

We demonstrate field-induced single-ion magnetic anisotropy resulting from the multiorbital Kondo effect on the diluted ytterbium alloy $({\mathrm{Lu}}_{1-x}{\mathrm{Yb}}_x){\mathrm{Rh}}_2{\mathrm{Zn}}_{20}$. 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 $\mathrm{SU}(N=8)$ Kondo model with a relatively large $c$-$f$ hybridization of $T_{\mathrm{K}}=60.9\mathrm{K}$. Dynamical susceptibility measurements on $\mathrm{Yb}{\mathrm{Rh}}_2{\mathrm{Zn}}_{20}$ support realizing the multiorbital Kondo ground state in $({\mathrm{Lu}}_{1-x}{\mathrm{Yb}}_x){\mathrm{Rh}}_2{\mathrm{Zn}}_{20}$. The single-ion magnetic anisotropy becomes evident above $\sim 5\mathrm{T}$, 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.

arXiv comment14 pages, 12 figures, 6 pages of supplementary material

References in corpus (21)

• Orbital Kondo effect in carbon nanotubes
• YSix closely related YbT${}_2$Zn${}_{20}$ (T = Fe, Co, Ru, Rh, Os, Ir) heavy fermion compounds with large local moment degeneracy
• Field-induced transition from even to odd parity superconductivity in CeRh${}_2$As${}_2$
• Evidence for a common physical description of non-Fermi-liquid behavior in f-electron systems
• Observation of the SU(4) Kondo state in a double quantum dot
• Intersite coupling effects in a Kondo lattice
• Theory of the thermoelectricity of intermetallic compounds with Ce or Yb ions
• Possible quadrupole density wave in the superconducting Kondo lattice CeRh2As2
• Energy scales of Lu(1-x)Yb(x)Rh2Si2 by means of thermopower investigations
• QCD Kondo effect: quark matter with heavy-flavor impurities
• Single-Site Non-Fermi Liquid Behaviors in a Diluted 4$f^2$ System Y${}_{1-x}$Pr${}_x$Ir${}_2$Zn${}_{20}$
• Quantum Fluctuations along Symmetry Crossover in Kondo-correlated Quantum Dot
• Single-ion Kondo Scaling of the Coherent Fermi Liquid Regime in Ce1-xLaxNi2Ge2
• Field dependent effective masses in YbAl${}_3$
• Sequential localization of a complex electron fluid
• Phase diagram of heavy fermion systems
• Magnetic order and crystalline electric field excitations of the quantum critical heavy fermion ferromagnet CeRh${}_6$Ge${}_4$
• Possible multi-orbital ground state in CeCu${}_2$Si${}_2$
• Specific Heat of Ce(1-x)La(x)RhIn(5) in Zero and Applied Magnetic Field: A Very Rich Phase Diagram
• The Finite-$U$ Impurity Anderson Model in the presence of an external magnetic field
• Effect of magnetic field in heavy-fermion compound YbCo${}_2$Zn${}_{20}$