Impurity spins in a non-interacting metallic quasicrystal

• Grant number: 22/14330-1
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: December 01, 2022
• End date: July 31, 2023
• Field of knowledge: Physical Sciences and Mathematics - Physics - Condensed Matter Physics
• Principal Investigator: Eric de Castro e Andrade
• Grantee: Carlo de Castro Bellinati
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 21/06629-4 - Electronic correlations in quantum materials: inhomogeneities and frustration, AP.JP2

Abstract

Motivated by a recent experimental realization of a heavy-fermion quasicrystal lattice, we would like to investigate the RKKY interaction between impurity spins placed in a metallic quasicrystal. Our goal is to observe how the effective coupling between the spins varies as a function of the electronic density and temperature. We will calculate the spectral properties using the Kernel Polynomial Method to handle large periodic approximants and approach the thermodynamic limit.