Study of the Influence of Transition Metal Atoms on Electronic and Magnetic Properties of Graphyne Nanotubes Using Density Functional Theory

Alaei S., Jalili S., ERKOÇ Ş.

FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES, vol.23, no.6, pp.494-499, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 6
  • Publication Date: 2015
  • Doi Number: 10.1080/1536383x.2013.863767
  • Journal Name: FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.494-499
  • Keywords: graphyne nanotubes, transition metal adsorption, electronic band structure, half-semiconductor, semimetal, CARBON NANOTUBES, GRAPHDIYNE, STORAGE, 1ST-PRINCIPLES, FAMILY, SHEET
  • Middle East Technical University Affiliated: Yes

Abstract

Density functional theory calculations were used to study the adsorption of three transition metal atoms (Fe, Co, and Ni) on the external surface of two zigzag and two armchair graphyne nanotubes. The most stable position for the adsorption of all three metal atoms on all nanotubes is on the acetylenic ring. The metal atom remains in the plane of the acetylenic ring and makes six bonds with neighboring carbon atoms. Fe and Co complexes are magnetic and show different properties such as metal, semimetal, half-semimetal, and half-semiconductor. Ni complexes are nonmagnetic and semiconductive, with a narrower bandgap in comparison to bare tubes. The results of these calculations are relevant for spintronics and the design of future electronic devices.