An improved method for computing dynamical conductivity*

Recently, methods for computing dynamical conductivity including anomalous Hall and spin Hall conductivity from first principles, have been developed. [1,2] The analytic tetrahedron interpolation method was suggested, and the Wannier interpolation scheme allowed computation with a dense grid. [3] With the aid of these, we present further technical improvements in the tetrahedron method for both the real part and the imaginary part of conductivity.

[1] Y. Yao et al, Physical review letters 92, 037204 (2004) [2] G.-Y. Guo et al, Physical review letters 100, 096401 (2008). [3] J. R. Yates et al, Physical Review B 75, 195121 (2007).