[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.4283/JMAG.2013.18.2.081

Effects of Nitrogen Defect on Magnetism of Cu-doped InN: First-principles Calculations

Kang, Byung-Sub (Department of Nano Science and Mechanical Engineering, Konkuk University)
Chae, Kwang-Pyo (Department of Nano Science and Mechanical Engineering, Konkuk University)
Lee, Haeng-Ki (Department of Radiotechnology, Suseong College)

Publication Information

Journal of Magnetics / v.18, no.2, 2013 , pp. 81-85 More about this Journal

Abstract

We investigate the electronic and magnetic properties in Cu-doped InN with the N vacancy ( $V_N$ ) 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 $V_N$ defect in Cu-doped InN has the lowest formation energy. Due to the hybridization between the Cu-3d and $V_N$ states, the spin-polarization on the Cu atoms in the InN lattice is reduced by $V_N$ defect. So, it shows a weak ferromagnetic behavior.

Keywords

Cu-doped InN; first-principles; nitrogen defect; ferromagnetism;

Citations & Related Records

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