title: Spin-splitting calculation for zincblende semiconductors using an atomic bond-orbital model.
abstract: We develop a 16-band atomic bond-orbital model (16ABOM) to compute the spin splitting induced by bulk inversion asymmetry in zincblende materials. This model is derived from the linear combination of atomic-orbital (LCAO) scheme such that the characteristics of the real atomic orbitals can be preserved to calculate the spin splitting. The Hamiltonian of 16ABOM is based on a similarity transformation performed on the nearest-neighbor LCAO Hamiltonian with a second-order Taylor expansion k at the Γ point. The spin-splitting energies in bulk zincblende semiconductors, GaAs and InSb, are calculated, and the results agree with the LCAO and first-principles calculations. However, we find that the spin-orbit coupling between bonding and antibonding p-like states, evaluated by the 16ABOM, dominates the spin splitting of the lowest conduction bands in the zincblende materials.
authors.affiliation: Institute of Photonics and Communications, National Kaohsiung University of Applied Sciences, Kaohsiung 80778, Taiwan. fenny@cc.kuas.edu.tw
authors.forename: Hsiu-Fen
authors.initials: HF
authors.lastname: Kao
authors.forename: Ikai
authors.initials: I
authors.lastname: Lo
authors.forename: Jih-Chen
authors.initials: JC
authors.lastname: Chiang
authors.forename: Chun-Nan
authors.initials: CN
authors.lastname: Chen
authors.forename: Wan-Tsang
authors.initials: WT
authors.lastname: Wang
authors.forename: Yu-Chi
authors.initials: YC
authors.lastname: Hsu
authors.forename: Chung-Yuan
authors.initials: CY
authors.lastname: Ren
authors.forename: Meng-En
authors.initials: ME
authors.lastname: Lee
authors.forename: Chieh-Lung
authors.initials: CL
authors.lastname: Wu
authors.forename: Ming-Hong
authors.initials: MH
authors.lastname: Gau