A k dependent potential for bands in metals. II. Calculations; Ca and Al

For pt. I see ibid., vol.2, 1055-61 (1972). The use of the k dependent potential is described. The band structure of Ca and its Fermi surface are computed with this potential and it is shown that the results are a marked improvement on those given by conventional potentials. The energy eigenvalues are computed for symmetry points for Al and it is shown that fair agreement is obtained with results obtained from a pseudopotential. It should be stressed that the potential used is entirely a priori, with no adjustable parameter.