TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.11.015
TI  - Field-induced local Fermi-liquid states in the underscreened Kondo model for Eu compounds
PY  - 2023/06/06
UR  - https://scipost.org/SciPostPhysProc.11.015
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 11
SP  - 015
A1  - Kuniyoshi, Shingo
AU  - Shiina, Ryousuke
AB  - We have studied an underscreened Kondo model for the impurity spin $S=7/2$ capturing the $4f$ characteristics of a nearly divalent Eu ion. By using the numerical renormalization group method, it is shown that an unusual heavy-fermion state is induced from the underscreened spin state when a weak crystal field is introduced. It is also found that the application of the magnetic field enhances the effective mass of the heavy fermions, reflecting the field-induced level crossing of the spin states. We will discuss the mechanism of these mass enhancements in terms of a realization of the two-stage Kondo effect.
ER  -

@Article{10.21468/SciPostPhysProc.11.015,
	title={{Field-induced local Fermi-liquid states in the underscreened Kondo model for Eu compounds}},
	author={Shingo Kuniyoshi and Ryousuke Shiina},
	journal={SciPost Phys. Proc.},
	pages={015},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.11.015},
	url={https://scipost.org/10.21468/SciPostPhysProc.11.015},
}