  We have studied finite-sized single band Hubbard chains with Fibonacci
modulation for half filling within a mean field approximation. The ground state
properties, together with the dc conductivity both at zero and non-zero
temperatures, are calculated for such quasi-periodic Hubbard chains. While a
reduction in the conductivity is found for strong electronic interaction or
strong Fibonacci modulation, a competition between these two is observed to
enhance the conductivity. The results at finite temperatures also illustrate
some interesting features of such finite-sized systems.
