Zeeman spectroscopy of vanadium-doped indium phosphide

Abstract

The authors report the results of Zeeman spectroscopy of the 704.45 meV and 707.0 meV photoluminescence zero-phonon lines of InP:V. The luminescence is shown to be due to the ³T₂ to ³A₂ transition of V³⁺ (3d²) in a tetrahedral crystal field. The excited state of the transition has tetragonal symmetry, which is ascribed to a static Jahn-Teller effect. A very good fit to the Zeeman splitting patterns and anisotropies is obtained for both the 704.45 meV and 707.0 meV lines using the spin Hamiltonian for the ³T₂ excited state, with a term to describe the axial distortion.