Spin–orbit splitting of acceptor states in Si and C

Abstract

We report calculations of the Γ8–Γ7 spin–orbit splittings of substitutional acceptor levels in silicon and diamond and corresponding Raman measurements for Si : X (X=B, Al, Ga, In). The calculations were performed using a Green's function method based on a full-zone 30×30 k.p Hamiltonian together with a Slater–Koster ansatz for the acceptor potential. The results are in reasonable agreement with experimental data.