Thermoelectric Features of Magnetic Doped Graphene Nanoribbons

TL;DR

This study investigates the thermoelectric properties of magnetic impurity-doped graphene nanoribbons at room temperature, highlighting how doping influences electrical and thermoelectric behavior through band structure modifications.

Contribution

It presents a combined theoretical approach using density-functional theory and Boltzmann methods to analyze the effects of magnetic impurities on thermoelectric properties of graphene nanoribbons.

Findings

Magnetic doping alters the band structure and thermoelectric coefficients.

Impurity distance from edges significantly affects thermoelectric performance.

Comparison of different nanoribbon types reveals varied thermoelectric responses.

Abstract

Thermoelectric properties of Graphene Nanoribbons doped by magnetic impurities Fe and Co are carried out in room temperature. We report on a study of the band structure dependent properties such as electrical conductivity, charge of carriers and Seebeck coefficients. We investigate the thermoelectric properties using the Semi-classical Boltzmann method. The electronic band structure of doped nanoribbons are evaluated by using density-functional theory in which the Hubbard interaction is considered. In this work we compare the different types of the nanoribbons and their thermoelectric features in the presence and absence of the magnetic impurities and discuss the importance of the distance between impurities and the edge of the nanoribbons.