Self-consistent, linear-combination-of-Gaussian-orbitals band-structure method is used within the independent particle model, to calculate the electron momentum distributions, ρ(p), and two-photon momentum distributions, ${\mathrm{\rho }}^{2\gamma }$(p), in metallic vanadium. We present results for ρ(p), Compton profiles, ${\mathrm{\rho }}^{2\gamma }$(p), one- and two-dimensional angular correlation of positron annihilation radiation, etc. Results are compared with other calculations and with experiments wherever available. In particular, the present results for ${\mathrm{\rho }}^{2\gamma }$(p) are analyzed in terms of contributions from different sheets of Fermi surface of V, and are compared with ${\mathrm{\rho }}^{2\gamma }$(p) reconstructed from experimental two-dimensional angular correlation of positron annihilation radiation data sets by Pecora et al.

• Received 28 January 1992

DOI:https://doi.org/10.1103/PhysRevB.46.7857