  This Roadmap provides an overview of the critical role of materials in
exploiting spin and topology for next-generation quantum technologies including
computing, sensing, information storage and networking devices. We explore the
key materials systems that support spin and topological phenomena and discuss
their figures of merit. Spin and topology-based quantum technologies have
several advantages over their classical, charged-based counterparts, including
non-volatility, faster data processing speeds, higher integration densities and
lower power consumption. We discuss the main challenges facing the field,
identify strategies to overcome them, and provide a realistic outlook on future
possibilities of spin-based and topological materials in quantum technology
applications.
