  The two Gamow-Teller (GT) branches connecting the double-beta decay partners
(116Cd, 116Sn) and (150Nd, 150Sm) with the intermediate nuclei 116In and 150Pm
are studied within a microscopic approach based on a deformed proton-neutron
quasiparticle random-phase approximation built on a Skyrme selfconsistent mean
field with pairing correlations and spin-isospin residual forces. The results
are compared with the experimental GT strength distributions extracted from
charge-exchange reactions. Combining the two branches, the nuclear matrix
elements for the two-neutrino double-beta decay are evaluated and compared to
experimental values derived from the measured half-lives.
