New Evidence for the Two-Electron <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></math></span> State in GaP

M. Gal; B. C. Cavenett; P. Smith

doi:10.1103/PhysRevLett.43.1611

New Evidence for the Two-Electron $O^{-}$ State in GaP

M. Gal, B. C. Cavenett, and P. Smith

Phys. Rev. Lett. 43, 1611 – Published 19 November 1979

Abstract

Optically detected magnetic resonance in oxygen-doped GaP shows that the infrared emission at 0.84 eV and its phonon replicas are due to a spin-triplet to -singlet transition of the two-electron state of oxygen. The resonance data also show that the two-electron center has axial symmetry along the [110] axis, indicating that after capturing the second electron a strong lattice relaxation takes place.