Current exploration of topological materials for futuristic electronics

We offer a pedagogical review of a new class of quantum materials with non-trivial topological properties, which holds significant promise for future electronic applications. Recent advances in the development of topological materials have spurred exciting progress in areas such as spintronics, valleytronics, photonics, superconductivity, and magnetoelectronics. In this review, we explore both the fundamental physics and the practical applications driving these developments. We begin by discussing several phenomena in spintronics that emerge from novel topological phases, such as spin-orbit torque, skyrmions, and magnetic proximity effects at interfaces. Next, we examine valley photonics, a field characterized by unique valley-selective physics, which influences both the bulk topology and bulk-boundary correspondence in valley photonic topological phases, setting them apart from other photonic topological phases. Finally, we highlight recent progress in magnetoelectronics, including the study of axion insulators and the topological magnetoelectric effect, both observed in various topological insulators. Through this review, we aim to shed light on the transformative potential of these materials in shaping the future of electronic and photonic technologies.