Magnetism in non-metal atoms adsorbed graphene-like gallium nitride monolayers
Journal
Applied Surface Science
Journal Volume
427
Start Page
609
End Page
612
ISSN
01694332
Date Issued
2018
Author(s)
Abstract
The electronic and magnetic properties of graphene-like gallium nitride (g-GaN) with adsorbed H, B, C, N, O, and F atoms were investigated using spin-polarized first-principles calculations. We found that H, B, C, N, O, and F atoms can be chemisorbed on a g-GaN monolayer. The total magnetic moments of 1.0, 2.0, 1.0, and 1.0 μ B are founded in B-, C-, N-, and F-adsorbed g-GaN monolayers, respectively. In addition, a half-metallic state appears in the N- and F-adsorbed g-GaN, while a spin-polarized semiconducting state appears in other g-GaN monolayers after the adsorption of B or C. These findings demonstrate that the magnetic properties of g-GaN can be effectively tuned by the adsorption of non-metal atoms. In particular, the F-adsorbed system that exhibits a half-metallic state and high Curie temperature of 367 K has great potential for application in spintronics. © 2017 Elsevier B.V.
Subjects
Adsorption
First-principles calculation
g-GaN
Half-metal
Room-temperature ferromagnetism
Spintronics
Publisher
Elsevier B.V.
Type
journal article