Abstract
Weyl semimetals have attracted significant interest in condensed matter physics and materials science, due to their unique electronic and topological properties. These characteristics not only deepen the understanding of fundamental quantum phenomena, but also make Weyl semimetals promising candidates for advanced applications in electronics, photonics, and spintronics. This review provides a systematic overview of the field, covering theoretical foundations, material synthesis, engineering strategies, and emerging device applications. This study first outlines the key theoretical principles and distinctive properties of Weyl semimetals, followed by an examination of recent advancements that enhance their functional versatility. Finally, this study discusses the critical challenges hindering their practical implementation and explore future development directions, along with the potential for expanding and enhancing their existing range of applications. By integrating discussions of both opportunities and obstacles, this review offers a balanced perspective on current progress and future directions in Weyl semimetal research. This review highlights the rapid advancements in Weyl semimetal research, driven by theoretical and experimental breakthroughs. Aimed at a broad scientific audience, this review provides a comprehensive overview of the field. It begins with fundamental material properties, progresses to engineering strategies, and concludes with emerging device concepts and potential applications, offering readers a clear guide through this dynamic research landscape.