A FAST METHOD FOR NONSPHERICAL POTENTIAL CORRECTIONS IN LMTO

A simple and efficient method to include non-spherical (NS) potential corrections in the linear muffin tin orbital (LMTO) method is presente d. The method is a natural generalization of the standard LMTO method. Special care has been taken to introduce only the most important NS c orrections to make the present method only 10% slower than the standar d LMTO-ASA. The method is described and tested for the calculation of shear moduli in BCC and FCC transition metals. Results are in good agr eement with so-called full potential calculations.