Exchange interaction between cerium ions due to hybridization with conduction electrons

• Grant number: 19/05670-0
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: June 01, 2019
• End date: November 30, 2020
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Valter Luiz Líbero
• Grantee: Felipe Donizete Picoli
• Host Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

The Coqblin-Schrieffer formalism will be applided to study the magnetic ordering in some cerium based compounds. The procedure consists in calculate an effective interaction between cerium ions due to the hybridization of localized levels (4f) and conduction electrons. The Anderson model and the Coqblin-Schrieffer procedure will be used to generate an effective coupling between cerium ions. We want to perform the calculations without the restriction of ions very far apart, as did in the first applications. In this way, we hope to value quantitatively the contribution of all total angular momentum components to the magnetic ordering.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PICOLI, FELIPE D.; LIBERO, VALTER L.. Non-asymptotic Coqblin-Schrieffer interaction between local f(1)-states. Journal of Magnetism and Magnetic Materials, v. 550, p. 6-pg., 2022-05-15. (19/05670-0)