- (Relativistic) density functional theory of the electronic structure of atoms, metals, and compounds
- Orbital magnetism in solids and alloys
- Magnetic anisotropy energy of magnetic alloys
- Semiconductors doped with magnetic impurities
- Half-metallicity in various compounds
- Intrinsic Josephson junctions in high-Tc superconductors
- Electronic structures of nano-wires
- Magnetoelectric effect in domain walls
- Electronic structures of Carbon nano-tube and graphene
