Year: 2024
Type: article
Abstract: We investigate the long-range behavior and size dependence of the Ruderman-Kittel-Kasuya- Yosida (RKKY) interaction in hexagonal and triangular graphene nanoflakes with zigzag and arm- chair edges. We employ the tight-binding model with exact diagonalization to calculate the RKKY interaction as a function of the distance between magnetic impurities, nanoflake size, and edge ge- ometry. Our findings demonstrate a strong dependency of the RKKY interaction on edge geometry and flake size, with notable changes in the RKKY interaction strength. We further analyze the influence of structural defects on the interaction strength of exchange interactions.
Source: Physica Scripta
Authors: Ahmet Utku Canbolat, Özgür Çakır
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4402907249