DFT+DMFT study of dopant effect in a heavy fermion compound CeCoIn5

Abstract

We study the dopant-induced inhomogeneity effect on the electronic properties of heavy fermionCeCoIn5using a combined approach of density functional theory (DFT) and dynamical mean-field theory (DMFT). The inhomogeneity of the hybridization between Ce-4fand conduction electrons is introduced to impose the inequivalent Ce atoms with respect to the dopant. From the DFT to the DFT+DMFT results, we demonstrate a variation of the hybridization strength depending on the hole or electron doping. A drastic asymmetric mass renormalization could be reproduced in the DFT+DMFT calculation. Finally, the calculated coherence temperature reflects the different development of the heavy quasiparticle states, depending on the dopant.

7 pages, 7 figures

References in corpus (6)

• Modelling the Localized to Itinerant Electronic Transition in the Heavy Fermion System CeIrIn5
• Reversible Tuning of the Heavy Fermion Ground State in CeCoIn${}_5$
• Interacting Antiferromagnetic Droplets in Quantum Critical CeCoIn_5
• Magnetic structure of Cd-doped CeCoIn5
• Electronic tuning and uniform superconductivity in CeCoIn5
• First-principles study of the Kondo physics of a single Pu impurity in a Th host

Cited by in corpus (1)

• Carrier-doping effect and anomalous transport properties in Ni-doped CeCoIn5 investigated by Hall resistivity measurements