[19p-PB6-1~10] 15.3 III-V-group epitaxial crystals, Fundamentals of epitaxy

[19p-PB6-9] Spin and electronic states of Mn pair configurations on GaAs(110)

〇(B)Koya Okamoto¹, Motoi Hirayama¹ (1.NIT-Anan)

Keywords:semiconductor, surface

We have investigated magnetic and electronic properties of Ga-substituted Mn pair configurations on GaAs(110) surface, using the spin-density functional theory based on the first-principles pseudo-potential method. A long-range ferromagnetic coupling between Mn atoms is dominant, so an anti-ferromagnetic coupling in [110] atomic chains is extremely unstable.