Is Materialism Inherently Atheistic?

Materialism is the doctrine that claims the ultimate reality is
matter, and many people believe that this theory disproves the
existence of God. But need a materialist be an atheist, or need
an atheist be a materialist? Developments in contemporary science
have radically changed our understanding of matter. In this
dialogue Mark and Rupert disentangle materialism from atheism,
showing that a more sophisticated and contemporary form of
materialism could include a spiritual dimension.