Electronic structure and magnetism of Mn-doped GaSb for spintronic applications: A DFT study Academic Article

abstract

  • © 2016 Author(s).We have carried out first-principles spin polarized calculations to obtain comprehensive information regarding the structural, magnetic, and electronic properties of the Mn-doped GaSb compound with dopant concentrations: x = 0.062, 0.083, 0.125, 0.25, and 0.50. The plane-wave pseudopotential method was used in order to calculate total energies and electronic structures. It was found that the MnGa substitution is the most stable configuration with a formation energy of ∼1.60 eV/Mn-atom. The calculated density of states shows that the half-metallic ferromagnetism is energetically stable for all dopant concentrations with a total magnetization of about 4.0 μB/Mn-atom. The results indicate that the magnetic ground state originates from the strong hybridization between Mn-d and Sb-p states, which agree with previous studies on Mn-doped wide gap semiconductors. This study gives new clues to the fabrication of diluted magnetic semiconductors.

publication date

  • 2016/1/1

edition

  • 120

keywords

  • atoms
  • configurations
  • electronic structure
  • electronics
  • energy
  • energy of formation
  • fabrication
  • ferromagnetism
  • ground state
  • magnetic properties
  • magnetization
  • plane waves
  • pseudopotentials
  • substitutes

International Standard Serial Number (ISSN)

  • 0021-8979

number of pages

  • 1