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Effects of Nitrogen Defect on Magnetism of Cu-doped InN: First-principles Calculations
Journal of Magnetics, Volume 18, Number 2, 30 Jun 2013, Pages 81-85
Abstract
We investigate the electronic and magnetic properties in Cu-doped InN with the N vacancy (VN) from first
principles calculations. There is the long-range ferromagnetic order between two Cu atoms, attributed to the hole-mediated double exchange through the strong p-d interaction between the Cu atom and neighboring N atom. The system of VN defect in Cu-doped InN has the lowest formation energy. Due to the hybridization between the Cu-3d and VN states, the spin-polarization on the Cu atoms in the InN lattice is reduced by VN defect. So, it shows a weak ferromagnetic behavior.
Keywords: Cu-doped InN; first-principles; nitrogen defect; ferromagnetism
DOI: http://dx.doi.org/10.4283/JMAG.2013.18.2.081
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