Title :
Effect of clustering on ferromagnetism in (Ga,Mn)As
Author :
Raebiger, H. ; Ayuela, A. ; von Boehm, J. ; Nieminen, R.M.
Author_Institution :
COMP/ Lab. of Phys., Finland
Abstract :
Mn clustering, hole localization, and the electronic and magnetic properties of Mn clusters were investigated by total energy calculations within the density-functional theory using the projector augmented-wave method. Substitutional Mn on Ga sublattice were treated in different supercell configurations. Delocalized hole states extending throughout the entire supercell were obtained while spin-flip energies for the various Mn units were calculated.
Keywords :
III-V semiconductors; density functional theory; ferromagnetic materials; gallium arsenide; localised states; magnetic structure; manganese; segregation; semimagnetic semiconductors; total energy; GaMnAs; clustering; density-functional theory; electronic properties; ferromagnetism; hole localization; magnetic properties; projector augmented-wave method; spin-flip energies; sublattice; substitution; supercell configurations; total energy calculations; Antiferromagnetic materials; Inorganic materials; Magnetic materials; Magnetic properties; Magnetic semiconductors; Magnetic separation; Matrices; Physics; Plasma welding; Semiconductor materials;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1463814
